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02-08-2008 05:43 PM  10 years agoPost 1
snobdrs

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coatesville,pa-usa

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This may be a stupid question but is there A123 specific chargers or will normal lipo chargers work? I have a friend who wants to get into large electric planks and is deciding on a charger.

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02-08-2008 06:02 PM  10 years agoPost 2
snobdrs

rrVeteran

coatesville,pa-usa

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also on lithium batts, you have Li-po, Li-Ion, and Li-Fe.

We all know what the lipos are.
Are A123 cells Li-Ion?
Ive also seen Li-Fe what are these?
What are the voltages of each?
Advantages/ Disadvantage or each

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02-08-2008 06:30 PM  10 years agoPost 3
MJWS

rrKey Veteran

Airdrie, AB - Canada

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A123's are LiFe cells which are a type of LiIon.

Normal lipo chargers charge to 4.2V. A123 only need 3.6V to be fully charged. They will tolerate 4.2V, but it is better to charge them properly.

The only real charging consideration with A123's is that they can take very high current in a charge cycle and that requires a powerful charger if you wish to take advantage.

Take a look at the Hyperion 610i and 610i DUO. They are pretty much the cutting edge in high watt chargers at the moment. If you are going to be working with the big stuff these chargers are the way to go. Or even a benchtop lab power supply if you are really getting in and have AC power available.

Downside to A123's are bulk, around a 15% weight penalty, and limited choices in cell capacity. For a cost effective solution to large electrics those are pretty easy to overcome. Fast charges, extremely long cycle life, hard to damage, safety, and cost would be the upsides.

Mike

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02-08-2008 07:10 PM  10 years agoPost 4
MrMel

rrProfessor

Gotland

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If your getting seriously into A123 (packs up to 13s), get a Mastech 5020E, its a CC/CV unit (not a charger), but its THE ultimate tool for charging A123 since it can pump them with up to 20amp, all the way up to 50volt (mine goes even up to 51.5)

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02-08-2008 07:22 PM  10 years agoPost 5
mintaka007

rrNovice

spokane, wa usa

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amen mel
Just ordered mmy mastech 5020e yesterday. Cant wait till it gets here! Also ordered the power tubes from mec. Got them yesterday and cant wait to get my a123 built and charged.

Joker cx
Trex se
"Franken"Axe
Addictive as cocaine, but cocaine is cheaper!

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