Perform battery and charging system tests from your smartphone or tablet. Fast and accurate diagnosis with facility to forward results via email or text to workshop reception or customer. Waterproof (IP65) rating and 500mm cable. Rechargeable internal 3.7V Li-ion battery, allowing testing of batteries with as little as 1.5V of residual charge. Fast Bluetooth pairing, can store up to 2,000 detailed test reports.