◆ Temperature-protection configuration inside to prevent charging heat.Effectively protect the battery and ensure safe to use electricity. ◆ LED charging light tells you the process.Then automaticly stops when fully charge. ◆ Adaptable for both buttton top and flat top batteries to charge.18650/18650B(3.7V) battery.
◆ Easy take and use with a light weight and small size for home /travel/car using. ◆ Durable polymer materials and environmental protection.