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WattCycle 12V 50Ah LiFePO4 Battery

$11399 USD $12999
Free Shipping, taxes and discounts calculated at checkout.

Features

  • Compact: 7.7 x 5.1 x 6.7 inches
  • Safe: Low-temperature cut-off protection
  • Premium: EVE grade A+ LiFePO4 cells
  • Durable: 5,000-15,000 deep discharge cycles
  • Reliable: Built-in 50A BMS | 640W | 640Wh
  • Scalable: Max 4S4P, up to 10.24kWh
  • Waterproof: IP65
  • Certification: SDS/UN38.3/FCC/CE/ROHS/UL

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Shipping

Destinations:

  • We only ship orders toContinental 
  • Currently we DO NOT ship to Alaska, Hawaii, and Puerto Rico.

Shipping Fee:

  • FREE shipping on all orders
  • Shipping method: UPS Ground

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.

Applications

Backup Power/Camping/Solar System/Small Weeders/Toy Cars and so on

Reliable Power for Your Adventures

Long-lasting, Lightweight, and Perfect for All Your Needs

Description

  • Advanced Lithium-Ion Technology: The WattCycle 12V 50Ah LiFePO4 battery is crafted with the latest lithium-ion materials, ensuring a safer and more eco-friendly alternative to traditional lead-acid batteries. It offers high energy density, long cycle life, excellent safety, and emits no harmful hydrogen gas.
  • A+ Grade Cells & Longevity: Built with A+ grade cells and certified by SDS/UN38.3/FCC/CE/ROHS, this battery boasts 20% more range than lead-acid counterparts, delivering stable performance and high efficiency. It supports 5-10 years of use and 5,000-15,000 deep cycles. The integrated 8A BMS ensures safe operation.
  • Flexible Configuration: The 12V LiFePO4 battery supports both parallel and series connections for increased capacity and voltage. For optimal performance, use batteries of the same brand, voltage, and capacity, purchased within 6 months. Up to four batteries can be connected in series.
  • Versatile Applications: Ideal for RVs, camping, boats, golf carts, trolling motors, wheelchairs, ride-on toys, backup power, emergency lighting, alarms, home energy storage, solar, and wind power systems. When using with ride-on toys, opt for a larger capacitor to prevent power failures due to load protection.
  • Reliable Quality & Support: WattCycle batteries offer 3 years of free warranty service and lifetime technical support. For any questions or issues, our support team is dedicated to providing satisfactory after-sales service.
 

Reviews (22)

Customer Reviews

Based on 22 reviews
91%
(20)
9%
(2)
0%
(0)
0%
(0)
0%
(0)
B
Bolt
This battery is fantastic

The first thing I noticed when I received it was how lightweight the battery was. I took it out for a three-hour inflatable pontoon run on a nearby lake, and although it wasn't running constantly, the battery still showed a full charge when I got home and plugged it in to recharge. It's fantastic!

S
Scribant
12v 50ah fish finder battery

Up to now, the quality seems to be outstanding. I own their 100ah trolling motor batteries, and they have been perfect. Based on the price and quality, I would strongly recommend WattCycle batteries.

S
Stewart
Strong battery, easy to use, great value, informative manual

After a few days of testing, I can confidently say this is a great battery for many uses. It charged easily and was ready in a few hours. I've had amateur radios and CB radios connected continuously scanning for days, and the voltage barely dropped. I ordered it after researching options to power my amateur radio gear. I'm excited about the great deal and even more about the quality and usefulness for years to come.

M
Metz Karl
Graph Battery

Great battery that runs my graphs all day in my boat

C
Claderova
Great for astrophotography

I bought this to replace an aging lead acid battery for my astrophotography rig. It lasted a week at a star party without charging. The discharge curve is more like a cliff, so it powers every to the very end, unlike lead acid batteries which slowly die causing mysterious behaviors in electronics along the way.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

What's inside the box?

Know Every Part of the Battery

wattcycle 12v 50ah LiFePO4 battery main parts summary

Main Features Summary

  • wattcycle 12v 50ah LiFePO4 battery size

    General

    • Dimensions:L19.5 x W13.0 x H17.0 
    • Weight: 11.46lbs(5.2kg) 
    • Waterproof Rating: IP65
    • Housing Material: ABS (Flame Retardant Plastic)
    • Terminal: M8 bolts
  • wattcycle 12v 50ah run time for reference

    Battery

    • Cell: Grade A+ LiFePO4 Cells
      Energy: 640Wh
    • Cycle Life: 5,000 cycles @100% DOD ~ 15,000 cycles @0% DOD
    • Max. Expansion: 4S4P
    • Internal Resistance: ≤40mΩ
  • wattcycle 12v 40ah premium 50a bms

    BMS: 50A

    • Max. Cont. Output Power:640W
    • Max. Cont. Charge/Discharge Current: 50A
    • Max. Discharge Current (5s): 100A±50A
    • Low-temp Protection: Yes (32℉/0℃)
    • Low-temp Auto Recovery: Yes (41℉/5℃)
  • wattcycle 12v 50ah LiFePO4 battery charging ways

    Charge

    • Charge Voltage/Current:14.6V ± 0.2V/10A (0.2C)
    • Charge Method: CC/CV
    • Charge Temperature: 32℉~131℉ (0℃~50℃)
    • Discharge Temperature:-4℉~131℉ (-20℃~55℃)
    • Storage Temperature: 32℉~131℉ (0℃~55℃)

Start Your Trip with the Safe & Reliable Battery

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Tech Specs
 
GENERAL
Dimensions (Inches) 7.7 (L) x 5.1 (W) x 6.7 (H) 
Weight 11.4lbs / 5.2kg
Waterproof Rating IP65
Warranty 5 years
Housing Material ABS (Flame Retardant Plastic)
Terminal M8 bolts

BATTERY
Cell Grade A+ LiFePO4 Cells
Nominal Voltage 12.8V
Nominal/Usable Capability 50Ah
Energy 640Wh
Cycle Life 5,000 cycles @100% DOD, 6,000 cycles @80% DOD, 15,000 cycles @60% DOD
Max Depth of Discharge (DOD) 100%
Max. Expansion 4S4P
Internal Resistance ≤40mΩ

BMS
BMS 50A
Max. Continuous Output Power 640W
Max. Continuous Charge Current 50A
Max. Continuous Discharge Current 50A

CHARGE
Charge Voltage 14.6V ± 0.2V
Charge Method CC/CV
Recommend Charge Current 10A (0.2C)
Charge Temperature 0℃ to 50℃ / 32℉ to 131℉
Discharge Temperature: -20℃ to 55℃ / -4℉ to 131℉
Storage Temperature 0℃ to 55℃ / 32℉ to 131℉
Low-Temperature Protection Yes (32℉/0℃)
Low-Temperature Charging Protection Auto Recovery Yes (41℉/5℃)

Frequently Asked Questions

Q1: Does it support the short circuit protection?

A1:
Yes!

Q2:Does it support communication capability?

A2:
Standard shipping normally takes 3-5 days. Next day shipping is available on all domestic orders (for an additional charge). International shipping times depend on the products and destination (estimated at checkout).

Q3: What to do when receive the battery?

A3:
You need to fully charge the battery.
Note: If you want to connect the batteries in series or parallel, please fully charge the batteries.

Q4: Where can l install it?

A4:
The battery should be installed in a clean, cool, and dry location, away from water, oil, and dirt.

Q5: What tools will I use for the installation?

A5:
1) Proper insulation protection equipment
2) Multimeter, battery cables
3) Battery charger/charge controller

Q6: What preparations, tools, and precautions are necessary for installation?

A6:
Before Installation:
1) Check for visible damage to the battery, including cracks, dents, deformation, and other visible abnormalities.
2) Ensure that the top of the battery and the terminal connections are clean, free of dirt and corrosion, and dry. If any issues are detected with the battery, please contact us for assistance.
3) Do not short-circuit the battery terminals, as doing so may cause a current surge and result in irreversible damage to the system and battery.
4) Before connecting, confirm the polarity to avoid damaging the battery due to polarity reversal.
5) Use a circuit breaker, fuse, or an appropriate-sized circuit breaker designated by a qualified electrician, licensed installer, or regulatory authority to protect all electrical equipment.

Installation Steps:
Step 1: Fully charge the batteries separately.
Step 2: Test the voltage after 15 minutes of standing, which should be greater than 13V.
Step 3: Connect your batteries in series and/or parallel.

Q7: Can I connect the battery with other batteries from other brands?

A7:
No, you cannot.
When connecting batteries in series and parallel, please follow the following rules.


1) Same brand (Due to different BMS settings, do not connect lithium batteries of other brands)
2) Same battery type (LiFePO4) (Do not connect batteries of other types, such as lithium-ion, lead-acid, or other batteries)
3) Same voltage (recommended for fully charged batteries) (12.8V)
4) Same capacity (50Ah)
5) The purchase cycle of the two batteries should not exceed three months.

Q8: What precautions should be taken when using lithium batteries?

A8:
Use a LiFePO4 battery charger with a maximum charging voltage/current of 14.6±0.2V/50A.
The battery is classified as a flammable and explosive item. Please use it with caution.

DON'T:
Avoid mechanical impact/No short-circuit/No crush/No disassemble/No incinerate/No heat above 150°F/No harge above 15V/No immerse the battery in water or fire/No use batteries from other brands or different types of batteries in series/parallel (due to different BMS settings)/No reverse the battery and charger

DO:
Use a torque wrench to tighten bolts not your hands
Keep the battery away from fire, hazardous substances, or materials.

Q9: What should be considered when charging?

A9:
Check if the AC-DC battery charger you are using has a specific lithium charging setting and ensure the following charging requirements are met.
Many battery chargers are designed for lead-acid batteries and may not have suitable settings for lithium batteries.

Charging Tips:
1) Use a 14.6V LiFePO4 battery charger.
2) Recommended charging voltage: 14.4 ~ 14.8V
3) Recommended charging current:
20A - The battery will be fully charged to 100% capacity in approximately 2.5 hours.
50A - The battery will be fully charged to 100% capacity in approximately 1 hour.

Q10: How should batteries be stored?

A10:
We recommend charging the WattCycle Energy battery to 50%. Then, disconnect the battery from the load by removing the negative wire from one battery.
Overall, the battery's capacity loss is less than 3.5% per month at 77°F. However, if stored in extreme environmental conditions, the capacity loss may increase.

Customer Reviews

Based on 22 reviews
91%
(20)
9%
(2)
0%
(0)
0%
(0)
0%
(0)
B
Bolt
This battery is fantastic

The first thing I noticed when I received it was how lightweight the battery was. I took it out for a three-hour inflatable pontoon run on a nearby lake, and although it wasn't running constantly, the battery still showed a full charge when I got home and plugged it in to recharge. It's fantastic!

S
Scribant
12v 50ah fish finder battery

Up to now, the quality seems to be outstanding. I own their 100ah trolling motor batteries, and they have been perfect. Based on the price and quality, I would strongly recommend WattCycle batteries.

S
Stewart
Strong battery, easy to use, great value, informative manual

After a few days of testing, I can confidently say this is a great battery for many uses. It charged easily and was ready in a few hours. I've had amateur radios and CB radios connected continuously scanning for days, and the voltage barely dropped. I ordered it after researching options to power my amateur radio gear. I'm excited about the great deal and even more about the quality and usefulness for years to come.

M
Metz Karl
Graph Battery

Great battery that runs my graphs all day in my boat

C
Claderova
Great for astrophotography

I bought this to replace an aging lead acid battery for my astrophotography rig. It lasted a week at a star party without charging. The discharge curve is more like a cliff, so it powers every to the very end, unlike lead acid batteries which slowly die causing mysterious behaviors in electronics along the way.

wattcycle_12v_50ah_LiFePO4_battery

WattCycle 12V 50Ah LiFePO4 Battery

From $11399 USD $12999
 

PACK

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