Narada 313K Series Operation Manual - page 17
Narada Power Source Co., Ltd. 313K series 12V battery operation manual V1.5
17
4.4 FAQ analysis and solving measures
No.
FAQ
Processing method
1
High float
Voltage
variation
1. Check if setting parameters are right
2. Replace cell which’s float voltage lower than 2.18Vpc with the
new batter. New and old batteries production data should no more
than 6 months. If one in third float voltage lower than 2.18V, then
replace whole strings batteries
3. Discharge battery with 100% DOD after replace, effect will be
obvious
2
Battery can’t
be charged
and
discharged
1. Check battery connection, ensure no loose connector, corrosion,
cut, reversal connection
2. Check the battery whether leaking, bulging, cracking happen
3. If no above abnormal occurrence, then test open circuit voltage
(OCV) after rest 30min, if battery’s OCV less than 2.08Vpc, replace it.
3
Reverse
polarity
connection
and crack
Replace reverse polarity connection and crack battery
4
There are
white crystal
in terminal or
valve ports
If it is false leaking, clean white crystals with a soft cloth dipped with
soapy water, then wipe it dry with a dry soft cloth. You can also
wipe with a soft dry cloth directly. Be careful not to plug the valve
port.
5
Electrolyte
leakage
If battery leakage, replace it and clean corrosion rack and ground.
6
Battery bulge
or crack
Replace the battery with serious bulge immediately. If battery only
Slight bulging (the sidewall bulge size 5mm‐10mm), handle it as
following:
1. Check whether battery outlet of safety valve cover plate is
blocked, if blocked, replace the cover plate or clean obstruction. If
no hole in cover plate, replace it immediately.
2. Check whether the battery voltage is too low (below 2.08V/pc) or
reverse connection battery.
3. If it is no cause of clause 1 and 2, then check system voltage
sitting, if too high, adjust the setting parameters. Open valve for a
while to let internal gas escape after disconnect the circuit with
special tools.