50Ah × 12V = 600Wh
Your battery has a capacity of 600 watt hours, it's 0.6kwh electricy.
In certain cases – such as building an off-grid solar power system – you may need to wire multiple batteries together to build a battery bank. Batteries can be wired in series, parallel, or series-parallel.
Wiring batteries in series sums their voltages but keeps their amp hours the same.
For example, let’s say you wire two 12V 100Ah LiFePO4 batteries in series. Doing so sums their voltage for a total of 24 volts (12V + 12V = 24V), but keeps their amp hours the same at 100Ah.
The result is a 24V 100Ah battery bank. To calculate its watt hours, you multiply amp hours by volts.
100Ah × 24V = 2400Wh
Turns out your battery bank was a capacity of 2400 watt hours.
There is an alternative way to arrive at this number. You could instead calculate the watt hours of one of your batteries, and then multiply that value by the number of batteries you’re wiring together.
You know that each battery is a 12V 100Ah battery. So you can first calculate its watt hours.
100Ah × 12V = 1200Wh
Then you just need to multiply the watt hours of the one battery by the number of batteries you’re connecting together — 2, in this example.
1200Wh × 2 = 2400Wh
Using this approach, we arrive at the same value: 2400 watt hours. Use whichever method you prefer.
Note: The second method assumes that your batteries are identical. I strongly recommend that you only wire identical batteries together. By identical I mean the batteries should have the same age, voltage, and amp hours. They should be the same battery type and from the same brand.
Let’s instead say that you wired your two 12V 100Ah LiFePO4 batteries in parallel. Wiring batteries in parallel sums their amp hours and keeps their voltages the same.
So, for this example, summing the amp hours gets us 200 amp hours (100Ah + 100Ah = 200Ah) and the voltages remain the same at 12 volts.
The result is a 12V 200Ah battery bank. You calculate its watt hours using the same formula:
200Ah × 12V = 2400Wh
In this example, your battery bank once again has a capacity of 2400 watt hours.
Notice that the battery bank has the same number of watt hours regardless of whether you wire the batteries in series or parallel. The way you wire batteries together affects their voltage and amp hours, but the resulting battery banks will always have the same number of watt hours.
Warm Tip: When you wire the battery cell in a pack, it's batter install a BMS System, to control the battery charging, dis-charging, and protect the battery.
Contact us if you need to know more about the battery wire, and the solar energy system.
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Website: www.solarcarry.com