moneymarketing wrote on 27
th Jun, 2016 at 4:48pm:
Are you sure because I have seen other chargers on the site basically the size of a lipstick container that supposedly have 5000 mAh capacity.
It would be really disappointing if it didn't have that type of power in case I needed it to crank a vehicle
Is there any way to test it?
To turn a vehicle on it's usually just a spark.. so it won't matter much..
In a continuous power supplying case scenario though things are different..
Just for the record, I usually test the capacity of my power-banks using my cell phone..
Etc.
My cellphone's battery is a 3200mAh one.
My power-bank when fully charged it boasts a 12000mAh capacity.
So, if I don't use my phone at all while it's charging, could the power-bank charge it up to 100% at least 3 times before getting drained?
If it does then I think we're close enough to the true value and I'm happy with it. We can never really reach the theoretical value (12000mAh) but we should get something above 85% of it, if it's legit.
Of course, along with the number of uses the total capacity goes down as we go, but that's how the rechargeable batteries' lifespan works, so it's normal.
You could also check if there is an extra label on the battery's original label if you open it (you may void the warranty this way though).
I've seen batteries of a 2000mAh capacity having an extra layered label on them that says 2400mAh or so.. it's a Chinese trick for raising the price.. or more appropriately making you believe that you get something more than what you pay for...