Robotino 3 charger specifications

[MarkusVDH]

Hey everyone I am searching for Robotino 3 charger specifications we are planning to make the switch from lead acid to NIMH but need to make sure everything will work properly with the hardware we have. As well I am wondering what temperature sensors are required in my NIMH packs. I have attached pictures of the charger board and the links from Robotino wiki were the info should be but is not opening. If anyone could provide this info that would be great.
Thanks.

https://ip.festo-didactic.com/InfoPortal/Robotino3/Hardware/Supply/EN/ChargingElectronics.html

https://openrobotino.org/Nimh_overview.html

[verbeek]

Attached you can find the datasheet of the nimh cell we used and some pictures of the assembly of the pack with 9 cells. each pack has an NTC10 temperature sensor build in. this sensor is connected to the plugs connected to the connectors without cable of your charger board.

to each charger board you connect two packs. thats it.

there is one more thing. currently you have only one charger board on the left side (seen from behind) of robotino. for using nimh you would need a second charger board placed at the right side of robotino. this is a problem becouse you can not order a single charger board. you could try with one charger board but then you can only connect two packs and there might be issues with the firmware in this scenario.

[MarkusVDH]

Ok thank you verbeek so if I understand correctly you use 4 packs of 9 cells in each total. My plan was you use 2 packs of 10 making 12v each to reach the desired 24v, would this not be possible with the one charging board. I am unsure since the charging board has hookups for 2 battery setups.

[verbeek]

The charging board is for packs with 9 cells. 10 cells will not work, because the external power supply is 24V and this must be higher than the voltage from your battery pack. You can connect two packs to one charging board.

[MarkusVDH]

Ok if this is the case what did you mean by needing 2 charging boards. What is the advantage to having a second charging board?
Thanks

[verbeek]

Each board can charge two packs. Two packs on the left and two packs on the right. Then you need a charging board on the right.

[MarkusVDH]

ok, thank you that makes sense.