Phantom APP18A1-BS12  Black Small 12V 18Ah 'A' Polarity Case Type-1 Powersports Battery LiFePO4 batteries are safer for the operator and the environment; no explosive gasses, lead, or acid are released during charge or leak out Battery has zero sulfation Holds unloaded charge for one year without maintenance; faster cranking for better starts; super-fast recharge rate; can be discharged further than equivalent lead-acid batteries On average, LiFePO4 batteries are one fifth the weight of lead-acid batteries APP18A1-BS12 fits these common batteries: YTX16-BS, YTX16-BS-1, YTX20CH-BS