Estimating Battery Requirements
445-0145-01-01
B–5
Battery Sizing Example
This battery sizing example illustrates a typical calculation, assuming an
opportunity to charge the batteries every three days.
This example illustrates how quickly your battery needs can escalate. To
reduce the required battery size, you can conserve energy by eliminating
or reducing the use of some loads or by re-charging more frequently.
When sizing your battery, resist the temptation to skip the last step of this
calculation (multiplying by 2). More capacity is better since you will have
more reserve capacity, be better able to handle large loads and surge loads,
and your battery won't be discharged as deeply. Battery life is directly
dependent on how deeply the battery is discharged. The deeper the
discharge, the shorter the battery life.
Appliance
(A) Power
Consumption
(Watts)
(B) Operating
Time per Day
(Hours)
Daily watt-
hours needed
for this
appliance
(= A x B)
TV & VCR
200 W
2 hours
400 Wh
Microwave oven
1400 W
15 min = 1/4 hour
350 Wh
3 lamps, 60 W
each
180 W
4 hours
720 Wh
Coffee maker
600 W
15 min = 1/4
hour
150 Wh
Hair dryer
1500 W
6 min = 1/10 hour
150 Wh
Steam iron
700 W
6 min = 1/10 hour
70 Wh
Total daily watt-hours of AC load
1840 Wh
x Number of days between charges
3
= Total watt-hours of AC load between charges
5520 Wh
Battery Ah used between charges (divide by 10)
552 Ah
Recommended Battery Bank Size in Ah (multiply by 2)
1104 Ah
XPower 1200 Plus 1750 Plus.book Page 5 Friday, October 21, 2005 4:19 PM
Содержание XPower 1000 Plus
Страница 1: ...XPower Inverter 1000 Plus and 1750 Plus Owner s Guide...
Страница 4: ...iv...
Страница 12: ...xii...
Страница 16: ...1 4...
Страница 49: ...A Specifications Appendix A contains electrical performance and physical specifications for the XPower Plus...
Страница 60: ...B 10...
Страница 64: ...C 4...