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longer than an AC charger unless you are using a high amperage charge controller will
sufficient solar panels.
c)
This is the least recommended option! Carefully discharge the batteries all to a precise
voltage (down to 1/10th of a volt) between 11.9 to 12.3V (e.g. select a voltage of 12.2V DC).
You will need to carefully monitor the voltage with a voltmeter or multimeter to make sure you
remove the load discharging the battery right when it hits that precise voltage. We
recommend using a discharging load of no more than 50A (i.e. maximum of 600W) so they
don’t discharge so fast you miss the exact point when they hit the targeted low voltage.
Note:
In all of the cases above (whether you are charging or discharging) the voltage will either
“relax” back down a few tenths of a volt when you remove the charger or go back up
when you remove the DC load on the battery. Don’t panic. That’s ok. The important
part is you stop the dis/charging at the same point in time when it reaches those target
voltages.
11.
I have a simple battery monitor or a low power device connected to the battery and
it seems the battery is cycling, turning off and on. What’s going on?
The KiloVault® batteries need a minimum of 250mA to be drawn or they will go into their power
saving, standby mode. The simplest solution is to connect additional loads to reach at least
250mA (3 Watts).
12.
The voltage on the battery momentarily drops when a load is initially connected –
what’s going on?
This is normal result of the battery switch from its pre-charge function to provide enough current
when connected to devices that have input capacitors and, in turn, high current surges in an
extremely short period of time. The battery will resume its normal voltage and function mode
within a few short seconds afterwards.
13.
The battery is not working when it is connected to the inverter.
Some inverters have higher input capacitors whose current draw overcomes that of the pre-
charge function of the battery. To minimize the initial discharge when the batteries are initially
connected to the inverter, make sure that the inverter is off while connecting. Then wait 45
seconds before powering up the inverter.
14.
The Bluetooth app shows a short circuit event in the log. What’s happening?
When the battery is connected to a DC load or a charging load the pre-charging function of the
battery is disabled. That pre-charging function is used to compensate for the surge capacitors on
the input side of inverters and other devices. This order of connecting devices may trigger the
short circuit protection in the BMS once the high inrush device (usually an inverter) is connected.
The solution here is to disconnect all devices from the battery (even battery monitors), first
connect the inverter, wait 45 seconds and then connect the remaining devices.
