This is a 150 lb absorbed glass mat surplus acid battery. 250 amp hours at the 20 amp rate and near normal charging amperage limit.
SERIES 4000
12 HHG 325P
8D BOX
325 amp hours
1069 CCA
1337 MCA
55.2 cm x 33.7 cm x 28.7 cm
90.5 kg 200 lbs.
The above are specs for the lesser of 2 Rolls 8-D flooded batteries.
Standby batteries have lots of acid to ensure that long periods of standby do not leave the plates exposed to stale (laminar) depleted acid. The 1.300 gravity helps.
It is important to remember that Telecom batteries are in the same boat as Golf Car and Scrubber batteries -- intense competition. Only cycle performance standards keep OEM halfway honest.
Think about Concorde's ambiguous specifications
Heavy but not absurdly so
Reasonably high CCA and ampere hours for the weight.
Absurdly high charging current values
Plates that are 160% as thick as the competition
Drift over to the R&S specs.
What do you think?
I definitely would not over-discharge the Chinese AGM on a regular basis. In fact I would tend to recommend not discharging it below 60%SOC and in addition get it back to 100% SOC as quick as possible. Observing the 20% amp hour recharging rule. Once every 30 cycles, discharge to 40% SOC then recharging the Telecom ASAP.
Imagine the duty of a Telecomm
Wait wait wait
Depend on the facility to size the bank according to estimated maximum on - duty cycle events. 1-hour? 3-hours? Coordinated with the entire chain of repeaters. No use in having a three hour duty when down the line a one hour repeater exists.
Once public power has been restored babysit a gentle recharge. An extremely gentle rate would boost cycle life a little but competitors would NYAH NYAH and point out the "excessive' hours "needed" to recharge. This is a cut throat business. After the contract time has expired, finding a 20 cycled battery is preferable to a 200 cycled battery.