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 lifestyle with unstoppable, smart energy.

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

The NERMAK 12V 7Ah LiFePO4 battery 2-pack delivers a high-energy, long-lasting lithium iron phosphate solution with over 2000 charge cycles, built-in 8A battery management system for enhanced safety, and versatile use cases from solar setups to ride-on toys. Compact and expandable, it offers fast charging and reliable heavy-duty output, making it the go-to choice for professionals and outdoor enthusiasts seeking dependable, maintenance-free power.

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Brand	NERMAK
Size	12V 7Ah-2PACK
Product Dimensions	15.1D x 6.5W x 9.9H Centimeters
Number Of Cells	6
Terminal	Marine Terminal
Battery Capacity	89.6 Watt Hours
Manufacturer	china
Batteries	1 12V batteries required. (included)
Item model number	12V7A
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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