ConforTeck Lithium Kit with Controller and Charger. The battery is capable of providing a maximum of 36 Watts. If you connect 2 devices to the battery, they will operate at the same intensity level. The battery has no memory effect, so you can recharge it every night if desired. Weight: 320g or 0.7 lbs. For better autonomy, we recommend keeping the battery as close to your body as possible. You can put it in an inner pocket of your coat or, alternatively, use our battery case and wear it on your belt. Before storage, we recommend recharging it. If the period is prolonged, we recommend recharging it every 3 months.