Rebelcell 24V50 AV Gebrauchsanweisung Seite 10

Guidelines for use
Your battery has been designed as a power source for electric boating and use in angling (24V
trolling engine), but is expliclty NOT suitable to use as a starter battery for internal combustion
engines (like in cars and outboards).
Use with an e-motor
The battery can handle a continuous load of 50A (for the 24V50 AV) or 100A (for the 24V100 AV)
and a 75A peak (24V50 AV) or 120A peak (24V100 AV) for 10 seconds. As the battery voltage
remains nearly constant until the battery is almost empty, you will notice that thrust remains high and
constant. This will allow you to use your outboard in a lower gear and this can significantly increase
the runtime of your e-motor. As the capacity indicator on your e-motor is designed for lead batteries it
is not reliable.
State of charge indicator
That is why your battery comes equipped with a digital state of charge indicator. You can activate the
indicator by pressing the silver-colored power button to 'on'. We recommend you leave it in the 'off'
position when not using the battery to prevent discharge of the battery through the state of charge
indicator. The power button is only for the display: the battery also works when the power button is
off.
Discharging
Fully discharging your battery is not harmful. The battery is protected by an advanced integrated
BMS (battery management system). Charge the battery as soon as possible after a full discharge.
Due to low self-discharge (~ 2% per month) voltage may drop below critical levels and damage the
battery irreversibly. When the battery is not in use, turn off the power button to prevent the battery
being discharged by charge status indicator. If the battery is not used for a longer period of time, we
recommend charging to 50% for optimum service life.
Charging
We recommend using a matching Rebelcell battery charger with a charging voltage of 29.4V. If you
use a different charger the warranty is void if damage occurs. Lead-acid battery chargers are not
suitable to charge your battery. Never use a battery charger with a charge voltage >29.4V or with a
different charging profile than CC/CV. These chargers can damage your battery! You can top-up or
partly charge your battery whenever you so desire, there is no so-called 'memory effect'. The
batteries cannot be charged at temperatures of 0°C and lower. The maximum charge current should
not be higher than 20A (24V50 AV) or 50A (24V100 AV). It is possible to charge the battery with a
solar panel. A suitable solar charge controller is required, more information can be found on our
website.
Battery charger (when using a Rebelcell battery charger)
Read the warnings on the battery charger sticker before use and follow the instructions!
Step 1: connect the battery charger by connecting the red (+) and black (-) M8 tongue
connector of the battery charger to the red (+) and black (-) M8 screw terminals of the battery.
Step 2: connect the power cord to the AC-outlet.
Step 3: set the power switch to "on" and the charging process will start.
The LED's on the charger indicate the status of the charging process. Unplug the power cord before
disconnecting the charging cables from the battery. It takes 5-6 hours (with the 29.4V12A battery
charger) to fully charge an empty 24V50 AV battery. For the 24V100 AV this is 10-12 hours.
BMS and safety
The BMS protects your battery and contributes to a long service life. Functions of the BMS are
protection against deep discharge, overcharge, too high or too low temperatures, high currents and
cell balancing. When certain safety thresholds are exceeded, the battery will shutdown as a
precaution and will turn itself on when the battery operates within specification. If this does not
happen automatically you need to disconnect your e-motor or other equipment in order to reset the
battery. After a few minutes you can reconnect your equipment. The activation of the BMS may seem
like a failure, but it is not. If it occurs repeatedly it can indicate a malfunction of a component in your