Review on π Battery Tender OBDII Accessory Cable: Efficient Car Battery Charging, Up to 3 AMP, 22 Inch Length by John Sharma
Works great.: Diagnostic, test and measurement tools
I use it with a 10w solar charger to keep the battery charged on my 2002 BMW M3 Convertible which is on the road most of the time. Winter. I leave the charger in the car on the dash and use the connector to connect it to the OBD port. Works perfectly. The battery stays over 12 volts when I check it.
- Easy to use
- boring packaging
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