4 Bat capacity

Discussion in 'General Electronics Chat' started by halah, Dec 25, 2013.

1. halah Thread Starter New Member

Dec 25, 2013
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Question:

if we have 4 Bat capacity B1 60%,B2 70 % , B3 90 % B4 95% how we can calculate

autonomy Time (back up time) for all Bats

2. MikeML AAC Fanatic!

Oct 2, 2009
5,450
1,066
How are they wired? Can you disconnect some batteries before the others?

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3. halah Thread Starter New Member

Dec 25, 2013
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Question: We have 4 Battery 12 V 170AH. We need calculate autonomy time (back up time) when we connect four Batteries two sets (2 Batteries in series and two set in parallel to get 24V) with load drawn 50 Amp DC. How calculate total Capacity (Ah) for batteries. we have T=A/AH but need more equations related Battery time discharge.

if we have 4 Bat capacity B1 60%,B2 70 % , B3 90 % B4 95% how we can calculate

autonomy Time (back up time) for all Bats

4. tubeguy Well-Known Member

Nov 3, 2012
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197

halah likes this.
5. halah Thread Starter New Member

Dec 25, 2013
3
0
if we have 4 Bat capacity Bat-1 60% ,Bat -2 70 % , Bat-3 90 % , Bat-4 95% how we can calculate autonomy Time (back up time) for all Bats

did total time take 60%
or
or collect (60+70+90+90)/4

or how caculte total back up time?

6. MikeML AAC Fanatic!

Oct 2, 2009
5,450
1,066
You have to stop discharging all the other batteries when the first battery is discharged to 11V, otherwise you will damage them, so the capacity of the entire bank is only as good as the battery with the lowest capacity. If you can disconnect the series branch of two batteries containing the worst battery, you can continue discharging the second branch a bit longer...