12V 628Ah Ultra Lithium Battery with Bluetooth Kit
⚡Compact Design: 18.9 X 14.25 X 9.53 inch | 153.99 lbs
⚡Massive Capacity: 628Ah (12.8V) | ~8kWh energy storage in a single unit.
⚡Equivalent to 2-parallel 12V 314Ah MINI BT
⚡3X weight energy density of lead-acid batteries making it suitable for scenarios that require lightweighting (such as RVs and ships).
⚡Ultra-Long Cycle Life: 6,000+ cycles at 80% depth of discharge (DoD)—outperforming standard LiFePO4 batteries.
⚡High Power Output: Continuous 300A discharge (3,840W) for heavy-duty inverters and equipment.
⚡Smart Bluetooth Monitoring: Track real-time voltage, state of charge (SoC), temperature, and health via WattCycle app.
⚡Robust 300A BMS with 8X Protections: Over-current, short-circuit, and thermal safeguards.
⚡Low/high-temperature cutoffs (charge: -5°C/23°F to 60°C/140°F; discharge: -25°C/-13°F to 75°C/167°F).
⚡Scalable Design: Supports up to 4-series (51.2V) or 4-parallel (2,512Ah) configurations with 128.61kWh Max. usable energy.
⚡Military-Grade Build: UL94 V-0 fire-resistant ABS+PC casing and corrosion-resistant M8 terminals.
12V 628Ah Ultra Lithium Battery with Bluetooth Kit - 🔥Battery + Charger (12V 80A) is backordered and will ship as soon as it is back in stock.
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Shipping Service
Shipping Service
Thank you for choosing WattCycle for your LiFePO4 battery needs! We understand that getting your batteries quickly and safely is important to you. This policy outlines the shipping process for WattCycle orders.
Destinations:
- We only ship orders to Continental
- Currently we DO NOT ship to Alaska, Hawaii, and Puerto Rico.
- Please do not use PO Box addresses, which are not within the delivery range of FedEx. If you accidentally use such addresses, please contact us to change them in time to avoid delays in delivery.
Shipping Fee:
- FREE shipping on all orders
- Shipping method: UPS Ground & Fedex
Shipping time:
The time frame of an order delivery is divided into two parts:
- Processing time: 1-2 business days
- Shipping time: 2-5 business days
- The shipping will delay for some objective or uncontrolled reasons. We will notice our customer ahead for delays.
Tracking Your Order:
- Once your order ships, you will receive a confirmation email with a tracking number. You can use this tracking number to track the progress of your shipment on the carrier's website.
Disclaimer:
- While we strive to meet the estimated delivery times provided, these are estimates and actual delivery times may vary depending on factors beyond our control, such as carrier delays or weather conditions.
Changes to This Policy:
- We reserve the right to modify this Shipping Policy at any time. We will post any changes to this policy on our website.
We appreciate your support! If you have any questions about our shipping policy, please feel free to contact us at.
Shipping Warehouse:
- Address: 20533 East Walnut Drive North, Walnut, California 91789
- Tel: 909 9600600
- Email: service@wattcycle.com
Warranty Policy
Warranty Policy
Warranty Policy
At WattCycle, we stand behind the quality and performance of our batteries. We offer a comprehensive warranty to ensure your satisfaction with your purchase.
Please read the product manual carefully before installing and using the product, and use the battery correctly under the instructions of the manual.
Warranty Period
WattCycle warrants that the product will be free from defect in workmanship and material to the original consumer purchaser.
The warranty period starts on the date of purchase by the original consumer purchaser.
| LiFePO4 Batteries (>50Ah) | LiFePO4 Batteries (≤50Ah) | Cells / Like New Batteries | LiFePO4 Battery Charger | Accessories | |
| Website | 5+2 Years | 3 Years | 3 Years | 3 Years | 1 Year |
| Amazon | 5+2 Years | 3 Years | 3 Years | 3 Years | 1 Year |
| Temu | 5+2 Years | 3 Years | 3 Years | 3 Years | 1 Year |
| Ebay | 5+2 Years | 3 Years | 3 Years | 3 Years | 1 Year |
Note: Only registered customers can extend the warranty service by 2 years. Final interpretation rights belong to WattCycle.
Question: Will my lithium battery still be covered under warranty after being connected in series or parallel?
Answer: As long as your product meets the warranty conditions and you have registered for the warranty, you will receive the corresponding warranty period. Connecting the batteries in series or parallel (or other normal operations) will not affect your product's warranty duration.
Warranty Statement
Any defects in material, workmanship of your product will be covered after you provide any valid proof of purchase and information including but not limited to:
1. A purchased order number made through WattCycle official stores.
2. Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.
Note: The limited warranty is restricted to the country of purchase. The warranty will be invalid on the items once they are taken or shipped to other countries.
Exclusions of Warranty
1. Misused, abused, damaged by accident or damaged due to force majeure. (e.g. lightning strikes, tornadoes, hurricanes, etc.);
2. Unauthorized modification, repair, dis-assembly or operation not in accordance with the official instructions or manuals;
3. Lost, stolen or full refunded product;
4. Warranty period expired;
5. The battery model on the warranty certificate does not match the actual item;
6. Product wear and tear through the usage of time.
Procedures for Warranty Claims
We’ll assist to analyze the consumer’s problem within 24 hours, and help solve the problem, restore battery usage, and introduce the optimal use method.
If our product fails to work normally, the consumer assists us in completing all the battery testing, and both parties confirm that the product does have quality problems, we’ll send a new battery replacement to the defective battery after it has been returned to our US warehouse by the pre-paid label we prepared. And the defective battery will be checked and tested by our technical team to analyze the problem.
From the date of purchase and within 6 months, if our products have quality problems and cannot work normally, we can provide replacement or refund services; Within 7 months from the date of purchase to the end of the warranty, if our products have quality problems and cannot work normally, we can provide replacement services.
Any product(s) returned for valid warranty service will be shipped at the expense and risk of us. We will provide a pre-paid label to customers who need to return the products to the designated place at the specified time.
Batteries that have been serviced or replaced under their warranty period do not receive extended warranties. Instead, the serviced/replaced battery(-ies) will abide by the original warranty period issued when first purchased.
Changes to This Policy:
We reserve the right to modify this Warranty Policy at any time. We will post any changes to this policy on our website.
Contact Us:
If you have any questions about our Warranty Policy, please feel free to contact us at service@wattcycle.com.
We encourage you to read this warranty policy carefully. By purchasing a WattCycle battery, you agree to the terms and conditions of this warranty.
12V 628Ah Ultra Lithium Battery with Bluetooth Kit
Description
Description
Unmatched Power and Durability for Demanding Applications
Engineered for high-performance energy storage, the WattCycle 12V 628Ah LiFePO4 Lithium Battery redefines reliability and longevity. Built with advanced lithium iron phosphate (LiFePO4) technology, this powerhouse delivers exceptional cycle life, safety, and scalability—perfect for off-grid solar systems, RVs, marine use, and commercial backup power solutions.
- Massive 8.04kWh Storage: Perfect for energy-intensive applications (RVs, solar systems, marine).
- High-Discharge Capability: Delivers 300A continuous current (3,840W), powering heavy loads like inverters and industrial equipment.
- 3x Lighter Than Lead-Acid: At 115.1 Wh/kg, reduces installation effort and boosts mobility for RVs/boats.
- Zero Maintenance & 100% Recyclable: No toxic chemicals, aligning with sustainable energy goals.
- 6,000+ Cycles at 80% Depth of Discharge: Outlasts standard LiFePO4 batteries by 2–3x, ensuring decades of reliable service.
- Low Self-Discharge (<3%/Month): Retains charge during seasonal storage, ideal for part-time RVers or backup systems.
- Wide Temperature Range: Operates safely from -25°C to 75°C (-13°F to 167°F), even in harsh environments.
- Bluetooth Monitoring: Track real-time battery health (voltage, SoC, temperature) via mobile app (confirm functionality with manufacturer).
- Plug-and-Play Expansion: Supports 4-series (51.2V) or 4-parallel (2,512Ah) setups for custom energy solutions.
- Lower Lifetime Cost: 6,000-cycle lifespan slashes replacement expenses vs. lead-acid or cheaper lithium options.
- Versatile Applications: Ideal for off-grid homes, commercial backup, telecom, agriculture, and adventure vehicles.
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Payment & Security
Payment methods
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WattCycle 12V 628Ah Ultra Deep Cycle Lithium Battery
Experience industry-leading energy density with the WattCycle 12V 628Ah Ultra Lithium Battery, engineered to deliver exceptional performance and reliability. Incorporating EV-grade A+ cells, a robust 300 A BMS with configurable over-current protection, and expandable 4 P × 4 S scalability for up to 128.61 kWh, this 12V 628Ah Ultra Lithium Battery sets a new benchmark in power storage. Protected by intelligent low-temperature cutoffs and backed by a 5 + 2 year warranty, it thrives in harsh environments while Bluetooth 5.0 monitoring ensures real-time visibility of voltage, state of charge, and temperature. With double the capacity of comparable units and an industry-leading 5,000–15,000 cycle lifespan, the WattCycle 12V 628Ah LiFePO4 battery delivers long-term value for the most demanding applications.
Advanced Wireless Control
Equipped with Bluetooth 5.0, the WattCycle APP transforms your smartphone into a command center for the 12V 628Ah lithium battery. With a few taps, you can remotely initiate or suspend discharge, verify system health, and monitor critical metrics—voltage, current draw, and cell temperature—in real time. Parameters such as the 300 A continuous discharge limit and peak over-current cutoff can be fine-tuned on the fly, ensuring your WattCycle 12V 628Ah LiFePO4 battery operates precisely to your requirements. This level of oversight delivers confidence and convenience, whether you’re managing an off-grid solar array, marine system, or RV power pack.
Extreme-Environment Protection
Built to withstand the harshest conditions, the WattCycle 12V 628Ah Ultra lithium battery employs intelligent thermal safeguards that automatically pause charging below 32 °F (0 °C) and only resume once ambient temperatures exceed 41 °F (5 °C). In even more severe cold, discharge is halted below –4 °F (–20 °C) to prevent cell damage. Once the environment returns to safe thresholds, the system seamlessly restores full functionality—ensuring your 12V 628Ah Ultra Lithium Battery delivers uninterrupted power whether you’re braving sub-zero winters or scorching summer heat.
Decade-Long Backup Endurance
EV grade A+ LiFePO4 calls have a longer lifespan, better-refined manufacturing, and contain more energy per cell. Engineered for unwavering reliability, the WattCycle 12V 628Ah lithium battery delivers over a decade of continuous backup power, ensuring mission-critical systems stay online through countless cycles. This exceptional longevity means your investment in the 12V 628Ah Ultra Lithium Battery pays dividends year after year, with minimal capacity fade and maximum uptime for residential, commercial, and industrial applications.
Superior Performance vs. Lead‑Acid
Unlike conventional lead‑acid designs, the WattCycle 12V 628Ah Ultra Lithium Battery is encased in UL94 V‑0 flame‑resistant ABS+PC housing and carries an IP65 ingress rating, delivering industry‑leading fire safety and protection against dust and water. This rugged enclosure means you can install it in harsh industrial settings, dusty warehouses, or aboard marine vessels with confidence—environments where traditional batteries often fail or require frequent maintenance. Coupled with the inherent maintenance‑free LiFePO4 chemistry, which eliminates watering and minimizes self‑discharge, this robust design lowers your total cost of ownership and guarantees reliable power delivery when you need it most.
Modular High-Capacity Configuration
Each WattCycle 12V 628Ah Ultra LiFePO4 battery stacked individual battery delivers 8038.4Wh of energy. For projects demanding even greater power, 16 batteries in 4P4S can create a 51.2V 2512Ah system that unleashes a colossal 128.61 kWh of energy. With a truly gigantic energy capacity, this system easily supports any energy demands. Whether you’re expanding a commercial backup system or building a residential microgrid, the 12V 628Ah Ultra Lithium Battery adapts without compromising reliability or performance.
Versatile Fast-Charge Options
Use the WattCycle 14.6 V 80 A charger specifically designed for LiFePO4 battery, which fully charges the battery in just 7.85 hours. With a faster charging rate than traditional lead-acid batteries it provides a better using experience. In addition, 3 other charging options, including solar panel, alternator and generator, suit your different charging needs.
Broad Application Spectrum
The WattCycle 12V 628Ah lithium battery excels in a wide range of settings—from reliable home energy storage and remote off‑grid microgrids to demanding marine environments and long‑haul recreational vehicles. In critical infrastructure such as UPS backup systems and telecommunications sites, its consistent output and intelligent protection features minimize downtime and maintenance. Whether you’re powering a vacation cabin, outfitting a commercial solar array, or ensuring uninterrupted operation aboard a vessel, the 12V 628Ah Ultra Lithium Battery delivers the robust performance and dependability that modern applications require.
Tech Specs
| Dimensions | 18.9 X 14.25 X 9.53 inch | 480 X 362 X 242 mm |
| Weight | 153.99 lbs | 69.85 kg |
| Standard/Maximum Continuous Charging | 125.6A/300A |
| Maximum Continuous Discharging | 300A |
| Over-current Discharge Protection | 310A±10A |
| Over-current Charge Protection | 310A±10A |
| Short-Circuir Current Protection | Support |
| Release Condition | Cut Load |
| Charging High Temperature Protection | 140°F~158°F / 60°C~70°C |
| Discharge High Temperature Protection | 149°F~167°F / 65°C~75°C |
| High Temperature Protection Release Condition | Drop by 41°F~59°F / 5°C~15°C |
| Charging Low Temperature Protection | 23°F~41°F / -5°C~5°C |
| Discharge Low Temperature Protection | -13°F~5°F / -25°C~-15°C |
| Low Temperature Protection Release Condition | Rise by 41°F~59°F / 5°C~15°C |
| Rated Voltage | 12.8V |
| Standard Charging Voltage | 14.6V±0.2V |
| Shipping Charging Voltage | 12.8V~13.5V |
| Shipping Capacity | 50% |
| Cycle Life | 6000@80%DOD |
| Self Discharge Rate | <3%/Month |
| Series & Parallel Connections | 4 Parrallel(Max) 4 Series(Max) |
| Communications | Not Supported |
| Case Material | ABS+PC/UL94 V-0 |
| Storage Temperature | 32°F~140°F/0°C~60°C |
| Terminal Bolt Size | M8 |
Let customers speak for us
This harness takes all the guess work out of linking your batteries in a series. Just connect all the wires up and plug the ends in and it’s done. They also come with really nice heat shrink connectors to hook up to your main power wires. 100% a must have for a 36v system.
Use to charge Wattcycle 280. Charges in reasonable time. Helpful display to match my Victron shunt and Bluetooth from battery. Added inline heavy duty on/off power switch to better control charging cycle.
This charger is an absolute BEAST!! By far the best 4 bank charger I've ever owned. I've been running it for about 6-8 months and its performed flawlessly!! Guys If you're not familiar with what I do, check out my socials and you'll see me put everything I own to hard work! I am rough on my stuff! I buy it to use it and I don't care about a scratch, ding, or dent. I put my boat and all my equipment through the ringer every time I go out. WattCycle makes QUALITY products at an incredibly low price! https://www.facebook.com/JoelDavisFishing
Very well constructed, packaged, and documented battery.
Just want to Maggie's service is excellent 👌 from start to finish she walk me through the entire process to get my battery and I am so happy with my 8 battery received in perfect condition communication with Maggie's is excellent reach out to her for support 👍
Couldn't be any happier I bought 3 100ah Pro trolling motor batteries and a 4 bank Charger Works Great
I received this 12V 280ah Smart Edition Bluetooth Mini with 200ah BMS the other day. I want to run my 12,000 Btu mini split overnight in my RV, so I tried running the 12,000 Btu mini in my garage which over 500 square feet more area to cool.
So I connected this WattCycle 12V battery to an inexpensive 12V dc to 120V ac pure sign wave inverters. I plugged in my mini split at 5pm, ran over night till 9 am. The mini split was still running with 36 percent state of charge left in the battery.
This was AMAZING! I plan on getting another 12V 280ah so I can run all my appliances in my 23 foot RV.
I highly recommend this battery. The phone app is great & only took 2 minutes to download, go through promos & recognize the battery. I can make setting changes on the phone app. Now I will order their WattCycle 30A charge controller to use solar to run appliances & charge battery during the day.
Came packaged nicely no issues. Nice they included both bolt sizes if you have two cables on the terminals. Put two of them in my rv and have worked great so far. Would love to get a bigger charger. Maybe one day.
VERY IMPRESSED so far! I ordered 2 of the NEW 300 amp hour MINI lithium batteries, and they are working perfectly. I ordered them Friday, October 18th, 2024 and received them both on October 25, 2024 in perfect working order. I started off by testing 1 quickly then placing it in a freezer set to 26 degrees Fahrenheit to test the low temperature charging protection, left it in for about 12 hours and hooked to a charger and it would not allow a charge to pass! I allowed it to warm up slowing and then tested again and it then would allow charging again. Very happy to see this feature working! Being able to use my system in freezing conditions is very important to me and this helps to know my investment in these batteries will be protected!
The second battery I began charging up off my 1000 watts of solar panels and Victron charge controllers I have in/on my fully converted cargo trailer camper. I use it as an "off-grid baby camper" as I call it. We use the camper (I built in spring 2020) for family trips, camp outs, cross country road trips, and "deer camp" where we expect it to deliver all the comforts of home in a small package while going wherever we want. We depend on the solar and lithium batteries along with chargers and inverter to keep the food in the fridge cold, my family and pets cool in the air conditioning in the heat of summertime, electric heaters and diesel heaters keeping us warm in the winter. Along with being able to run a coffee maker in the morning or making microwave popcorn for watching a movie on the TV before bed.... all while being able to camp anywhere we want without the concern of pluging in at a campsite or having to listen to a noisy and stinky generator. So far the available power in these batteries compared to my previous lithium battery bank I can instantly tell these batteries will be a major upgrade to my system.
My previous system consisted of 465 amp hours of lithium-ion in 3 parallel batteries. Connected in my system with a 12v Giandel 2200/4000 watt inverter it powered all our needs but I noticed a slight delay in developing power on some higher demanding appliances. With my limited time with these new Wattcycle 300ah Mini's, I've so far hooked up some power tools in my garage and a microwave in my trailer and they all have preformed like they were plugged into a regular outlet in my house. That's with only 1 battery hooked up! I've already been so impressed I've purchased a third to make my system 900ah!
The compact size of these 300ah Mini's is remarkable! Each of them is about the size of my previous 160ah lithium-ion batteries. I am going to be able to double my total power in the same space. They do weigh more (about 57 pounds each) than my previous batteries, but that is to be expected with their higher density..... or whatever they've done to pack so much power into such a small battery.
This battery is not only durable but also very well designed. After using it several times, I can say the power is consistent and much better than my old lead-acid batteries. The Bluetooth feature makes monitoring the battery status much simpler, and the waterproof feature is great too. Overall, it’s a purchase well worth the money, and I’ll be buying again!
WattCycle’s lithium battery is incredibly powerful, lightweight, and long-lasting. I love its fast charging feature, which makes it super convenient to use. With Bluetooth monitoring, I can check the remaining battery life anytime on my phone, which gives me peace of mind during long fishing trips. I’m very satisfied with this purchase!
This lithium battery has completely changed my trolling motor experience. The built-in Bluetooth feature is super convenient, allowing me to check the battery status anytime and avoid unexpected power outages. The battery life is impressive and easily lasts through a full day of fishing. I would definitely recommend it to any anglers who need a reliable power source!
I recently upgraded my mobility scooter's battery to the WattCycle 12V 200AH LiFePO4 battery, and it has been a game-changer. My old lead-acid battery was heavy, bulky, and offered limited range. This WattCycle battery is significantly lighter, which makes maneuvering my scooter much easier. But the real benefit is the incredible range. I can now travel much farther on a single charge, giving me the freedom to explore places I couldn't reach before. I no longer have to constantly worry about running out of power. The battery also charges quickly, which is a huge plus. The installation was straightforward, and the build quality of the battery seems excellent. It's a bit of an investment, but the improved performance, extended range, and peace of mind are well worth the price. Highly recommended for anyone looking to upgrade their mobility scooter's battery!
This battery provides an enormous amount of power, allowing us to run our pump consistently without worrying about depleting the battery. We've seen a significant increase in the pump's runtime compared to our old lead-acid batteries. What a difference!
I've been using this lithium battery with my trolling motor, and it’s fantastic! The battery lasts all day, even when running at higher speeds. It’s lightweight and charges quickly. No more worrying about power loss in the middle of my fishing trips. Highly recommend!
