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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🔋 Power your adventures with unstoppable, smart energy.

EXPANDABLE ENERGY - Connect up to 4 batteries in series or parallel to scale your power needs effortlessly
SMART SAFETY SHIELD - Integrated BMS guards against overcharge, over-discharge, and short circuits for worry-free use
RAPID RECHARGE READY - Quick 4A charging and heavy-duty 8A output keep you powered and moving fast
VERSATILE POWERHOUSE - Perfect for camping, emergency lighting, ride-on toys, and more—your all-in-one energy solution
ENDURANCE THAT OUTLASTS - 2000+ cycles vs. 300-500 lead-acid—power that keeps pace with your hustle

The NERMAK 12V 7.2Ah LiFePO4 battery pack delivers over 2000 charge cycles with built-in 8A Battery Management System protection, ensuring long-lasting, safe, and efficient power for a wide range of applications including solar setups, camping gear, ride-on toys, and emergency lighting. Lightweight and expandable, it’s engineered for the modern professional who demands reliable energy on the go.

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Manufacturer	NERMAK
Brand	NERMAK
Model	12V7A
Item Weight	2.1 pounds
Product Dimensions	5.94 x 2.56 x 3.91 inches
Item model number	12V7A
Batteries	1 12V batteries required. (included)
Manufacturer Part Number	12V 7A
Amperage	7.2 Amps

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

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