Bischoff & Bischoff GmbH |2023-11-20 - Revision: 3 3130 3130
Lead-Acid Batteries | Guideline Guideline | Lead-Acid Batteries
EN
7.3. Battery deep discharge
When the „reserve“ is completely exhausted or deep discharges are to be
avoided, up to approx. 90% to 95% of the retrievable energy is drawn.
The control unit (the controller) logs a deep discharge and the scooter
/ electric wheelchair emits warning tones (beeps) via the loudspeaker.
These sounds are similar to the sounds when reversing.
If the battery is heavily discharged, warning tones
(beeps) are emitted via the loudspeaker.
Apart from acoustic warning signals, deep discharges can also be
perceived when the buzzing of the electric motor gradually sounds lower
and the speed also noticeably decreases, especially on inclines.
Do not continue to operate the electric scooter or the electric wheelchair
when it is deeply discharged, because on the one hand, you will damage
the batteries permanently and, more importantly, they will suddenly stop
running. If you still drive on traffic routes, you endanger your own safety
and that of other road users.
Never drive with deeply discharged batteries.
There is a risk of sudden stopping and endangering
the safety of you and other road users.
The constant use of the energy reserve up to deep discharge is not
recommended under any circumstances, as this damages the batteries
and also puts you in the position of having to leave the vehicle somewhere.
The deeper the discharge, the fewer the number of charging cycles until
the end of the service life.
When using the reserve, immediate charging is an absolute must,
otherwise the batteries will, without the necessary voltagem, most
certainly be damaged.
8. Charging recommendation
The batteries only reach their maximum charging capacity after three
complete charging cycles. Before charging the batteries for the first
time, first empty the batteries (the red bar lights up) and then charge
them for at least 12 hours (all green bars light up) or, in the case of
LCD displays (without colour), all the bars are displayed. Repeat this
procedure at least three times. Please also note the display on the
charger. Only use chargers approved by the manufacturer. Always
charge to 100% if time permits, so that you have as much range as
possible.
Discharged batteries must be charged as soon as possible and must
not be in a discharged state. This also applies to partially discharged
batteries. Otherwise, a reduction in the service life of the battery is to be
expected.
During the charging process, the charger charges the batteries with
different methods. Initially by high currents and later by reduced
currents and later they are reduced while the voltage remains the same.
This means that the first 80% are charged quicker than the last 20%.
The last charging phase is important- it serves to balance the cells
within the battery.
In general, it is advisable to recharge the batteries only after a
discharge of at least 30%. Intermediate charges are possible.
However, a full charge should be carried out every four partial loads in
order to avoid a loss of power within the batteries.
If you are permanently planning to travel further and e.g. visit friends
with a power socket for an extended coffee break, you are welcome to
use the time to recharge the batteries there, of course with the
the consent of your friends. This extends the range and shortens the
overnight charge later on, so that your electric vehicle is ready for use
again more quickly.
When connecting the charger, first insert the plug into the scooter and
then the power plug into the socket. When unplugging the charger, first