Using the ZOHD Lionpack Max 21700 4S2P 10000mAh Li - ion Battery is easy. First, make sure to connect it properly to your RC hobby product. When charging, use the included balance charger protector to avoid any damage to the charging wires. The RED/GREEN XT60 Protector will show you the energy status of the battery at any time. Keep an eye on it so you know when to recharge. For maintenance, store the battery in a cool and dry place. Don't expose it to extreme temperatures or direct sunlight. Also, use the ZOHD battery straps and Velcro to keep the battery securely in place in your device. This will prevent any unnecessary movement that could potentially damage the battery. Charge the battery regularly, but don't overcharge it. If you notice any signs of damage, stop using the battery immediately.