## Unit conversions (electrical)

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Dhamnekar Winod
Sr. Staff Member
Posts: 192
Joined: Sat Nov 21, 2020 10:14 am
Location: Mumbai[Bombay],Maharashtra State,India

### Unit conversions (electrical)

Mobile specifications:
Battery power ratings: 2milli amp hours.

Lithium battery energy content : 3.7 watt hours

Now 3.7 watt hours means 13320 Joules or 3.7 volt amp hours , while 0.002 Amp hours means 1Amp per 7.2 seconds. Now how does we can relate both the specifications?
Last edited by Dhamnekar Winod on Fri Aug 13, 2021 8:13 pm, edited 1 time in total.
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ChenBeier
Distinguished Member
Posts: 873
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

### Re: Unit conversions (electrical)

All nonsense

1 J = Nm =1 Ws = 1 VAs

3,7 Watt is power not not work, the time is missing
13320 J is 13320 VAs = 3,7 VAh
The Charge is 7,2 * 10^-3 Ah, if the voltage is known then the work can be calculated.