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##### Asked by: Anika Nagel

automotive auto parts# What is the meaning of 150 Ah battery?

Last Updated: 26th March, 2021

**battery**is 13.80VDC - and so the

**150 AH means**the total capacity of the

**battery**is 2070 Watts. Typically, the cut-off voltage ismaintained at 10.5V (worst-case scenario) therefore, the

**battery**can be used for 25% of the rated power withoutre-charging.

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Keeping this in consideration, what is the meaning of AH in battery?

An ampere hour (abbreviated **Ah**, or sometimes amphour) is the amount of energy charge in a **battery** that willallow one ampere of current to flow for one hour. An ampere is aunit of measure of the rate of electron flow or current in anelectrical conductor.

Similarly, how long will 100 amp battery last? This means that a **battery** has a **100 A.H.**capacity if it is discharged over 20 hours, or at about 5**Amps**-per-hour (**100 A.H.** / 20 hours = 5 **Amps**DC). However, this same **battery would last** only one hour ifthe discharge rate was 50 **Amps**-per-hour (50 **Amps** DC x1 hour = 50 **A.H.**) because of the high rate ofdischarge.

In this regard, how many hours does a 150ah battery last?

Actual time **to** discharge the **battery** fromfull charge condition depends on the load. Total current drawn overtime in **hours will** remain **150 Ah**. However , the**battery** is designed **to** carry 15 A **for** 10**hours** , or 7.5 A **for** 20 **hours** .

Is a higher Ah battery better?

Heavier duty power tools will benefit from a**higher**-rated **battery** pack, because they'll run forlonger before a **battery** needs to be charged or swapped outfor a fully charged one. When **batteries** of the same classare used, **battery** packs should perform similarly. With allthings being equal, only the runtime is longer.