Batboard

As a temporary measure , I want to trickle charge a Jedi battery using a homebrew set up.

There are 4 contacts on the back of a Jedi battery - from left to right pin 1, 2 and 3 are -ve and pin 4 is +ve

My guess is that pin 1 is -ve for trickle charging (together with +ve pin 4) and pin 2 and 3 is for the battery sense circuit when fast charging?

Can anybody confirm this?

Thanks

From the left BACK of the battery:

--- Battery minus -------- Battery capacity -------- Battery temperature ------- Battery plus
______________________ resistor to - _________ thermistor to - _________ diode isolated

The thermistor runs 10 k ohms at 65 F. NTC

Many thanks Will