Question about Robitronic Expert LD 100

Hello, do you mean that it no longer works and the charger complains (battery "dead")? If yes, then you have two possibilities. 1. connect the same contacts with another Nimh battery for a few seconds. Or 2. use a "stupid" charger and bring it to life with e.g. 1A. If not, just select NiMh mode and charge with maximum 5A (5000 mA/1000) automatic operation. I always charge with 3.5 A, greetings M.

Press and hold Start => you can choose the type of battery then, if the device has detected the right battery, press Start again to start charging. Recharging stops automatically when the battery is full. (There may be some initial security settings to validate the first time you switch on, but just leave everything to the factory settings).