I have a PW 9110-6000 VA unit with 2 additional battery modules, (total 100 batteries - 35 Ah)
The battery charging circuitry appears not to be working as the UPS constantly discharges the battery packs
even with normal input of 230v. the discharge rate is approx. 600mA with no load on the UPS output.
I have temporarily provided an external charging system arranged to provide 14.1 v across each battery which
has solved the discharge problem and the UPS works perfectly.
However, I am concerned regarding the standing voltage of ~285v being applied to the UPS across the battery packs.
If possible, could you please provide some basic information regarding the charging circuitry to enable me set-up / repair,
or failing that, confirm the "safe" battery voltage under charging conditions.
I look forward to your response
Thank you
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