Need 2200mAh Gainscha 18650-2200MAH7.4V2S1P Battery? This 18650-2200MAH7.4V2S1P battery 100% compatible with Gainscha M322. The battery is up to standard and fully compatible with original specifications. We offer 12 months warranty on our all batteries! During this period, if your battery fails, we will replace your 18650-2200MAH7.4V2S1P battery with a new one. All our batteries are certified by CE, UL, ROHS, ISO9001/9002 as safe products.