✅ SMALLER SIZE BUT POWERFUL: WEIZE mini 100ah battery is 25% smaller than before but provides the same power (1280Wh energy). Engineered with Lithium Iron Phosphate (LiFePO4) technology made this battery has half the weight, and lasts 5 times longer than a lead acid battery. It is a perfect upgrade for any 12V Deep Cycle battery, and best choice for many applications such as Fish Finders, Ice Fishing, Camping, Solar System, or Home Alarm Systems, wherever you want without regard for space. ✅ 10 YEAR SERVICE: As the No.1 lead acid battery brand on Amazon, Weize newest Lithium Iron Phosphate Batteries are confidently guaranteed for 10 years! We aim for quality followed up with quality customer service, Amazon doesn't deal with the return of battery-related products, so please contact the seller directly. Weize support team is on standby for YOU. ✅Please charge the battery with a dedicated LITHIUM BATTERY CHARGER, and no more than 4 batteries in series. ✅ BUILT TO LAST: Our 12V 100Ah Lithium Batteries live more than 2000 cycles at 100%/8000 cycles at 50%(Suggested) depth of discharge, without decreasing in performance. The average lifetime of lead-acid batteries is about two years(500 cycles) at just 50% discharge. This basically means a LiFePO4 battery will last you at least 5 times longer than a lead-acid battery, which actually reduces overall cost. It has cold weather protection which is critical. ✅ AUTOMATIC BMS AND LOW TEMPERATURE CUT-OFF: The built-in Battery Management System (BMS) protects your battery from Over Charge and Discharge, Over Current, Short Circuiting, as well as Low and High Temperature for increased performance and longer life. The BMS will automatically cut off the battery and the voltage will drop below 1V. Only when the circuit is cut off, the battery will automatically reactivate after 1 second(No longer need a higher voltage input to activate). ✅ SAFE AND ENVIRONMENTALLY FRIENDLY: Made from 100% safe, nontoxic, not hazardous energy, Weize LiFePO4 battery has higher chemical stability, it is not prone to thermal runaway and will not overheat or catch on fire even if punctured. With no acid in the battery, you're able to safely mount in any position. BUT please read the user manual carefully before using, don't hesitate to call us if you have any questions about the battery. WEIZE 12V 100Ah Mini LiFePO4 Lithium Battery, Built-in 100A Smart BMS, Deep Cycle Low Temperature Protection Battery Perfect for RV, Solar, Marine, Trolling Motor, and Off Grid Applications