SOURCE: Battery Packs for Powerware 9355 UPS
If you battery packs are all at 130volts DC, then all of the packs will have become dead, and the batteries are not recoverable. Your battery DC bus voltage on a Powerware 9355 20 to 40kVA rated UPS is nominal 432 volts DC - 36 batteries in series in each string at 12 volts DC per battery. If batteries go below 10.5 volts DC each, or 378 volts DC bus voltage, no amount of charging will recover these batteries. You should not be recycling the DC battery breaker, unless you felt the battery breaker was faulty. The UPS would have given you an alarm message of either battery breaker Off, Charger Failure, or Low DC Bus Voltage long before the these batteries failed.
The battery test will not proceed if the batteries are dead.
What is the rating on the output of the UPS? kVA? Output Amps Max?
Try contacting anyone of them.
Eaton Power Quality Ltd
Tech & Service Support AC UPS Systems
T +44 (0) 1753 608 700
221 Dover Road
Slough, Berkshire
SL1 4RF
United Kingdom
Tech & Service Support DC Systems and ePDU
DC T +44 (0) 1243 810 500
ePDU +44(0) 1243 810 654
Durban Road
Bognor Regis, West Sussex
PO22 9QT
United Kingdom
Tech & Service Support Switch gear
Eaton Electric Limited
Customer Service Centre
Grimshaw Lane
Middleton
Manchester (UK)
M24 1GQ
Tel: +44 (0) 8700 545 333
Fax: +44 (0) 8700 540 333
email: [email protected]
Toll Free: 1 800 356 5737
E-mail: [email protected]
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