【Superior Performance】: Lithium iron phosphate battery has high energy density, Long cycle life, Good safety performance, No memory effect, etc. NERMAK LiFePO4 battery has built-in BMS protection to prevent overcharge, Over-discharge, Over-current and short circuit, and very low self-discharge rate. 【Long Cycle Times】: Lithium batteries 2000 + cycles no problem while the traditional lead-acid and batteries only 200-300 cycles，Alkaline batteries are single-use and do not have a rechargeable function. 【Widely Uses】: Can be a direct replacement for lead-acid or alkaline batteries, and can be applied to HD lanterns or flashlights,cameras,fire/safety equipment, etc,From search and rescue missions to backyard camping outings, our batteries will provide stable, powerful power. 【Charging Methods】The included data cable can be used to charge the battery directly using a cell phone charger, and it can also be used to charge the battery using a battery charger. 【Warm Note】: 2* 6v Replacement 4R25 battery，12 months warranty, If you have any question for our product, Contact us: click the "Ask a question" on our storefront or in "YOUR ORDER" options click the "contact seller" 6 Volt 12Ah Lifepo4 Lithium Heavy Duty Lantern Battery