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 Battery 2 Pack, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Small Solar, Camping, Lighting, Ride on Toys, Fish Finder and More, Built-in 8A BMS

Product ID: 468443393

Details

Battery Cell Composition
Lithium Ion
Brand
NERMAK
Item Weight
2.1 pounds
Manufacturer
Huizhou Yu'an
Product Dimensions
5.94"D x x
Size
12V 7Ah-2PACK

⚡8A continuous heavy-duty output

🔋2000+ cycles lifespan

🔌Built-in BMS for advanced protection

€ 144.23

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your adventures with next-gen reliability and zero compromises!

SMART SAFETY FIRST - Integrated BMS guards against overcharge, discharge, and short circuits
ECO FRIENDLY ENERGY - Lithium iron phosphate chemistry with low self-discharge and no memory effect
POWER WHEN IT COUNTS - 8A continuous discharge for reliable, heavy-duty performance
VERSATILE EXPANDABLE - Connect up to 4 batteries in series or parallel for scalable power
ENDURANCE THAT OUTLASTS - 2000+ recharge cycles—leave lead-acid in the dust

The NERMAK 12V 7Ah LiFePO4 Battery 2 Pack delivers over 2000 recharge cycles with a built-in 8A Battery Management System ensuring superior safety and performance. Ideal for solar setups, camping gear, ride-on toys, and more, it offers scalable power options and eco-friendly lithium iron phosphate technology for long-lasting, dependable energy.

Specifications

ASIN	B0B78K2TSV
Battery Type	Lithium Ion
Best Sellers Rank	#59,684 in Health & Household ( See Top 100 in Health & Household ) #98 in 12V Batteries
Brand Name	NERMAK
Compatible with Vehicle Type	Fish finder,12V router,Lighting
Customer Reviews	4.1 4.1 out of 5 stars (198)
Included Components	2*12.8V 7.2Ah LiFePO4 Battery
Item Dimensions D x W x H	5.94"D x 2.56"W x 3.91"H
Item Weight	2.1 pounds
Manufacturer	Huizhou Yu'an Technology Co., Ltd.
Manufacturer Part Number	12V 7A
Manufacturer Warranty Description	1 year
Model Number	12V7A
Size	12V 7Ah-2PACK
Terminal	F2 Terminal
Unit Count	2 Count
Voltage	12.8 volts

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€ 144.23

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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