Battery charging

[CliveGarrad_5040092]

Does anyone remember a unit that fitted between the car battery and the caravan battery whilst sited, to charge the caravan battery up. I think it was called unicharge?

 

[martyn_5041434]

I have a Unicharger although haven't used it for years. It draws a charge from the car battery to charge the leisure battery but leaves enough charge in the car battery to start the car.

Mine finally packed up and when i wrote to the company I got no reply, so assume it folded.