what is the internal resistance of one of these batteries?

Thank you for your question, the internal resistance is around 30-50 milliohms.

Can this be used to power a 12v winch

Thank you for your question, you need to check what is the working current of power a 12v winch, the working current of our 36Ah battery is 36A, if the current is less than or equal to 36A then you can use it.

Can 6 of these be hooked up in series? my ups has a 72v setup. i would like to use these batteries instead but can’t find specifics.

Thank you for your question, there is no substitute as our batteries can only be connected in series with a maximum of 4.

Can this be used with a Batcaddy golf cart?

Thank you for your question, yes, if you are using two or more batteries in series, it is recommended that you use a Lifepo4 charger to charge the batteries.

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NERMAK 12V 7Ah (7.2Ah) Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar Powar, Lighting, Ride on Toys, Fish Finder and More, Built-in 8A BMS

NERMAK 12V 7Ah (7.2Ah) Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar Powar, Lighting, Ride on Toys, Fish Finder and More, Built-in 8A BMS

Product ID: 468443395

Details

Battery Capacity
7 Amp Hours
Battery Cell Composition
Lithium Ion
Brand
NERMAK
Item Weight
2 Pounds
Number Of Cells
1
Product Dimensions
5.94"D x x

⚡8A continuous discharge

🌱Eco-friendly LiFePO4 chemistry

🔋2000+ cycles lifespan

¥9613

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your life smarter, longer, greener.

POWERFUL RELIABLE - 8A continuous output with built-in 8A BMS for ultimate safety
UNMATCHED LONGEVITY - Over 2000 deep cycles—outlasts traditional lead-acid by 4x
ECO CONSCIOUS ENERGY - Non-toxic lithium iron phosphate chemistry for a greener, safer power source
LIGHTWEIGHT COMPACT - Less than half the weight of lead-acid, fits seamlessly in tight spaces
VERSATILE COMPATIBILITY - Perfect for solar setups, ride-on toys, fish finders, and emergency lighting

The NERMAK 12V 7Ah LiFePO4 deep cycle battery delivers 2000+ recharge cycles with a lightweight, compact design and built-in 8A battery management system. Engineered for safety and longevity, it’s ideal for solar power, outdoor gear, and emergency systems—offering a clean, eco-friendly alternative to traditional lead-acid batteries.

Specifications

ASIN	B0B78HTRDL
Battery Capacity	7 Amp Hours
Battery Cell Composition	Lithium Ion
Battery Type	Lithium Ion
Best Sellers Rank	#55,258 in Health & Household ( See Top 100 in Health & Household ) #108 in 12V Batteries
Brand	NERMAK
Brand Name	NERMAK
Compatible with Vehicle Type	Fish Finder, 12V Routers,Game Cameras,Radio
Customer Reviews	4.2 out of 5 stars 370 Reviews
Included Components	1*12.8V 7Ah Lifepo4 battery
Item Dimensions D x W x H	5.94"D x 2.56"W x 3.71"H
Item Weight	2 Pounds
Manufacturer	Huizhou Yu'an Technology Co., Ltd.
Manufacturer Part Number	12V 7A
Manufacturer Warranty Description	1 year
Model Number	12V7A
Number Of Cells	1
Size	12V 7Ah
Terminal	F2 Terminal
Unit Count	1.0 Count
Vehicle Service Type	Fish Finder, 12V Routers,Game Cameras,Radio
Voltage	12.8 Volts

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