Statpower Portawattz 400, Руководство по установке и эксплуатации

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For example, a 100W light bulb that is used for 4 hours will use 400
Watt-hours (Wh) and the inverter will consume approximately 40Ah
from a 12V battery.
Another useful rule of thumb is that the current drawn from the
battery can be estimated from the AC output watts by using a factor
of 10. For example, when running a 400W power drill, the inverter
will draw approximately 40A (400 divided by 10) from a 12V battery.
Battery Sizing Example
The following example shows how battery size is calculated,
assuming the battery can be recharged after two days:
This example illustrates how quickly your battery needs can escalate.
To reduce the required battery size, you can either conserve energy by
eliminating or reducing the use of some loads, or re-charge more
frequently.
When sizing your battery, be conservative and resist the temptation to
skip the last step of this calculation (multiply by 2). More capacity is
better because you gain more reserve capacity, and therefore can
better handle large loads and surge loads, and your battery won’t be
discharged as deeply.
l a c i r t c e l E
s t c u d o r P
r e w o P
n o it p m u s n o C
) A (
g n it a r e p O
r e p e m i T
y a D
) B (
-t t a W y li a D
d e d e e N s r u o H
s t c u d o r P r o f
) B x A = (
o b m o C R C V / V T W 0 0 2 s r u o H 2 h W 0 0 4
n a F e l b a T W 0 5 s r u o H 4 h W 0 0 2
p m a L e l b a T W 0 6 s r u o H 4 h W 0 4 2
d a o L C A f o s r u o H -t t a W y li a D l a t o T h W 0 4 8
s e g r a h C n e e w t e B s y a D f o r e b m u N x 2
n e e w t e B d a o L C A f o s r u o H -t t a W l a t o T =
s e g r a h C
h W 0 8 6 1
s e g r a h C n e e w t e B d e s U h A y r e tt a B
) 0 1 y b d e d i v i D (
h A 8 6 1
h A n i e z i S ) k n a B ( y r e tt a B d e d n e m m o c e R
) 2 y b y l p it l u m (
h A 6 3 3
Table 1 - Battery Sizing Example