Battery Storage.xmcd
A remote telecommunication site needs 2 days of battery storage for the load that needs 500 Ah/day at 12 V.
It is assumed that, at -20C degrees, the actual capacity of the battery discharged over a 48-hour period is 80% of the rated capacity.
Also assumed is that, at -20 C degrees, to avoid freezing, the maximum depth of dischage is limited to 60%.
(Q) Find the Amp-Hours of the storage for the battery bank.
SOLUTION
1. AH needed for 48 hours
Ah
2. Actual AH Needed (when it can dischareg only 60% of the size):
Ah
3. Final AH size (when considered the 80% capacity of the rated Amp-Hour)
Ah