Numatic TTB 3226 Owner's Instruction Manual page 21

To ensure your machine remains at its maximum efficiency and prolong your battery life, please follow
the simple steps below:
Under normal daily usage:
Recharge batteries after each use regardless of machine operation time.
Located under the seat is the circuit isolator plug.
Once the circuit isolator plug has been removed the display panel will show
'INHIBITED' and the machine will not operate.
Connect your charger using the adaptor lead supplied in the kit.
When charged, refit the circuit isolator plug to resume normal use.
Recharge the machine fully after its last use. Do not leave the machine in a discharged state.
Under abnormal use; i.e. leaving the machine without charging
for a period of time, we advise that you follow these steps:
If the machine will be standing unused for a period of 30 days
or more, then batteries must be fully charged and battery fuses
removed using the Maxi fuse-puller provided, prior to this period.
Batteries should be recharged every three months.
Charge fully the day before you start using the machine again.
21
Battery Care