which one is more powerfull, also what is the difference in ah and amps,
2007-09-19 05:21:40 · 4 answers · asked by bjmlewis 5 in Cars & Transportation ➔ Car Audio
An Amphour is, literally, the use of 1 amp per hour so your 12 AH battery will (theoretically) run a 1 amp motor for 12 hours; the 20 AH battery will last for 20 hours. In practise the battery will virtually never use all the rated amps and if you're talking about a motability scooter which is quite heavy it could stop when the battery is only half discharged. To explain fully it would be necessary to go deeply into the chemical and physics theory for rechargeable batteries. I believe Motability scooters have charging units to which the batteries should be connected regularly...like every night if the scooter has been driven during the day. Avoid letting the batteries run flat because quite often they will not recharge on a standard charger. More importantly, if it goes flat when you're out it could be difficult to get home! I've only given a few pointers; you should really consult with a motability expert to make sure you understand fully what limitations a scooter has because of its battery capacity.
2007-09-20 09:57:59 · answer #1 · answered by The Ancient Brit 3 · 0⤊ 0⤋
A 12 amp/hour battery will last for 12 hours when it is using 1 amp of current. A 20 amp/hour battery will last 20 hours when using 1 amp of current. If you use 2 amps of current on your mobility unit then the battery will last half the time. So one will last for 6 hours and one will last for 10 hours. Be careful though as every time you start up the motor draws more current for a short time.
2007-09-19 05:49:44 · answer #2 · answered by ANF 7 · 0⤊ 0⤋
I cannot tell which one is more powerful, as you gave the capacity of one (12ah) and the maximum current for the other (20amp).
Each one should have the following ratings:
voltage (e.g. 12v) - the voltage between the terminals of the battery at zero load.
current capability (in amps) - the maximum current the battery can cope with - which corresponds to the maximum power it can produce (Power = voltage x current, so a 12v battery of 20 amps can produce 240Watts of power)
Capacity (in amp-hours [ah]) - the maximum storage capacity of the battery. A 12ah battery can provide 12amps of current for 1 hour, or 1amp of current for 12 hours, or anything in between (e.g. 3amps for 4 hours).
2007-09-19 06:19:29 · answer #3 · answered by Neil 7 · 0⤊ 0⤋
ok, the 20 amp battery holds more power.
ah is amp hour... you can get 1 amp for 20 hours, or 20 amps for one hour... or variations of it...
so your 12amp battery is around half the storage capacity of the 20ah... join them plus to plus, and it wil give you 32ah at 12 volts..
2007-09-19 05:29:45 · answer #4 · answered by Anonymous · 1⤊ 0⤋