Safe to charge in a vehicle with provided O-01 fused battery harness lead or O-04 battery clips. No risk of overcharging. Safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintnce. Automatic shut-down if short-circuited or battery disconnected.
The automatic SAFE interactive maintnce tests the battery hourly and provides a float charge when needed. Connect and forget, safe to leave connected 24-7.