5. Troubleshooting / Q&A
1. Why is the battery bank suddenly shutting o?
• Likely, one or more of your batteries are not at the same voltage as the others. Those bat-
teries are hitting the upper or lower voltage cutoffs ahead of the others. When those batter-
ies shut themselves off to protect themselves, the battery bank drops below the operating
voltage of the inverter. Check all of the battery connections. Charge each battery up to 14.1
V. If the problem persists, please contact KiloVault.
• Your loads (DC load or inverter) have exceeded the current capacity of the battery bank.
The 1200 HLX+ maximum continuous discharge current is 80 A per 1200 in parallel.
The 2400 HLX+ maximum continuous discharge current is 150 A per 2400 in parallel.
The 3600 HLX+ maximum continuous discharge current is 200 A per 3600 in parallel.
If your known loads are close to your battery bank’s max continuous discharge current or
if you have very high surge loads like pumps or HVAC systems, your loads may simply be
too high for your bank. Please contact KiloVault about adding an additional parallel row of
KiloVault batteries to your bank.
2. Why aren’t the battery voltages staying equal over time?
• The battery cables are not of equal length or are damaged. Check to make sure that all
battery interconnects are of equal length, gauge and are in good condition.
• Cable terminal hardware is not tightened properly. Check to make sure that all terminal
hardware is tightened to between 7.38 and 8.11 ft-lbs (88.51 to 97.36 in-lbs OR 10 to 11
nm). Check to make sure all of the crimps on all cables are tight and solid. Use the Ohms
(Ω) setting on a voltmeter to measure the resistance of the battery interconnect cables.
They should all be within 0.1 ohms of each other.
3. Why has the battery reversed polarity?
• Verify the voltmeter probe orientation.
• The battery has dropped into the low voltage protection range and the BMS has shut down
the battery. If so, you can wait for the battery to reset or you can connect the battery to a
14.1V charge.
4. Why is the battery turning o and o when it is connect-
ed to a small DC device or inverter?
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