definitely 20aH only or is 22aH ok?

J

JayTea

100 mW
Joined
Jan 27, 2013
Messages
47
Hi All

I'm going to order a Ping battery sometime next month (when funds are approved)
but I'd like an educated opinion on what I'd like to do in the meantime for batteries
that can be delivered before Christmas.

OK, I have a brushless 1000W rear wheel (48V 20 aH) so I looked around for buggy batteries
and found these Lucas types;
http://www.ebay.co.uk/itm/2-Pair-x-12V-22AH-Replace-17AH-18AH-19AH-20AH-21AH-Lucas-AGM-GEL-Battery-/190650378199

It says they replace the 20 aH but at the 22aH rating, will they somehow damage the controller?

Would they require any special rigging?

The weight isn't actually a problem even with the 4 of them because it's not for a 2 wheel cycle.

Thankx
 
You just need to match your voltage appropriately. The ah is the capacity.

For example:
24v @ 10ah - powers 24v electronics and delivers 1a continuous for 10 hours (or 10a for 1 hour).
24v @ 22ah - powers 24v electronics and delivers 1a continuous for 22 hours (or 22a for 1 hour).

Higher amp hours also allows you to draw more nominal amps from the pack.
 
JayTea said:
OK, I have a brushless 1000W rear wheel (48V 20 aH) so I looked around for buggy batteries and found these Lucas types: http://www.ebay.co.uk/itm/2-Pair-x-12V-22AH-Replace-17AH-18AH-19AH-20AH-21AH-Lucas-AGM-GEL-Battery-/190650378199

It says they replace the 20 aH but at the 22aH rating, will they somehow damage the controller?
Click to expand...
even if i type all lowercase: it's 'Ah' and not 'aH'. also your comment 48v 20Ah doesn't make sense for a motor. so i guess you're referring to the battery. so after some teaching here comes the answer:
as long as the batteries will fit in the vehicle they can't be too big in terms of capacity. a 22Ah battery holds 2Ah more capacity than a 20Ah one. so 10% more with the same size. that's great. so your range just increased by 10%. well - in theory at least, as SLA batteries can NOT deliver anything near their nominal capacity. but still it will be some percent more than the original battery.
so in short words: everything's fine. GO for it if you really want to invest money into lead battery :)
edit: as dnmun says: you can't compare the two chemistry. they are worlds apart.
 
Ah is how much water is in the tank. It's the size of reserve or the of time it can give 12v or 48v.
The amp draw of controller is what the question is about. The battery is dumb the controller is the brains.
18ah or 40ah at 48v is the same, but 40ah has more reserve so higher amps can be taken from a larger ah battery. The battery is a salve from the demands of the controller.
20 or 22ah is fine or 40ah.
Lead is dead. 22ah is 12 ah of lifepo4 in real world use for ebike ect. or less.
 
dnmun said:
do not compare SLA batteries to a ping battery. do not buy SLA batteries.
Click to expand...
i guess you can NOT take this as valid for all scenarios. even lead batteries can make sense. if you can charge several times a day. if range is not an issue. if wait is not an issue, etc.
they are cheap and heavy and can't deliver high current. but you got the right environment they can make sense.
 
If you have a ping on the way, it would be a waste of money to buy lead now.

Patience Grasshopper. I know it's hard, but the Ping will satisfy when it comes.
 
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