How Much Power Can A 12V Lithium-Ion Battery Store?

If you're installing a solar power system, one of the most fundamental questions you might wonder is: What amount of power can be stored in a 12V lithium-ion battery?

 

Knowing about battery capacity

 

The capacity of a battery is in terms of amp-hours (Ah) and refers to the amount of energy it stores. You tend to see batteries such as lithium-ion ones, marked 12V 50Ah, 12V 100Ah, or even 12V 200Ah.

 

To arrive at stored energy, we take the following formula:

Energy in a battery (Wh) = Voltage (V) × Capacity (Ah)

Thus, in a 12V 100Ah battery:

12V × 100Ah = 1,200 watt-hours (Wh)

 

That means the Lithium Battery 100Ah is theoretically capable of delivering 1,200 watts for an hour, or 600 watts for two hours, and so forth. Real-world use is actually a bit less, though, because of efficiency losses.

 

How long can a 12V lithium-ion battery power devices?

 

To put that into perspective better, let's consider typical household or camping appliances:

 

·         LED light (10W): Roughly 120 hours (assuming continuous use)

·         Laptop (60W): Approximately 20 hours

·         Mini fridge (100W): Roughly 12 hours

·         TV (150W): About 8 hours

 

These estimates depend on the battery’s efficiency and depth of discharge (DoD). The 12V Lithium Ion Battery can discharge up to 90-100% without damage, unlike lead-acid batteries, which should only be discharged to about 50% to prevent degradation.

 

Is a 12V lithium-ion battery enough for you?

 

A 12V lithium-ion battery from SM Solar is excellent for solar installations, RVs, boats, and off-grid use. Knowing how much power a 12V lithium-ion battery can hold and how that translates to practical use makes it easier to plan your energy requirements for any solar or backup power installation!

For more information, you can visit our website https://www.smsolar.com.sg/ or call us at +6598203376