Battery version changed (battery with felt) - BT54.10-P-0001-01A

Models 202.028/121/128 

MODEL 202.028 /121 /128 as of 1.1.97 

As of 1.1.97 a battery with felt has been installed in the models specified above for a limited time. This battery is hermetically sealed, i.e. neither gas nor electrolytic fluid can escape. The gases produced in the battery are converted inside the battery (retransformed). A 62 Ah 400 A battery with felt is used instead of the previous 75 Ah 400 A battery, because the battery with felt has significantly lower capacity losses due to the new design.

These batteries are marked with a rating plate and should never be opened.

They differ from conventional batteries as follows:

1. No plugs
2. No acid level marks
3. No exterior vent
4. Rating plate on battery