the battery does not last the expected one complete hour, but only 30 minutes,
giving an actual available capacity of only 50%.
Rated
capacity
Average
discharge current
Actual
capacity
20 Ah
40 A (2 CA)
5 Ah (25%)
20 Ah
20 A (1 CA)
10 Ah (50%)
20 Ah
12 A (0.6 CA)
12 Ah (60%)
20 Ah
8 A (0.4 CA)
15 Ah (75%)
20 Ah
1 A (0.05 CA)
20 Ah (100%)
Notes:
1.
Dynamic Controls recommends to use batteries with a
capacity that is at least twice as high as the average
discharge current.
2.
New batteries often start with only 80% of their rated capacity.
After a few charging cycles the capacity will increase to 100%.
3.
Deep discharging or overcharging dramatically decreases the
capacity of the battery. This damage is permanent, the battery
will never return to its original capacity.
See also section 9.5: Battery warning conditions.
GBK60348
: Issue 1 – October 2007
14