BIUBLE Car Jump Starter 3000A Peak 20000mAh 12V Auto Booster Battery Charger Jumper Box with Display Please pay attention to this note: 1. Please charge after receiving the jump starter. 2. Charge every 3 months, as low power may cause a failed start. 3. Charge phones or tablets only occasionally; the efficiency is about 50%. 4. The charging speed or discharging speed may increase during the last 15% of the jump starter's battery capacity. Please do not worry about these issues. These are normal characteristics of high-rate lithium batteries and will not affect the product quality or normal use.
