Li-on battery vs Lead acid battery, Question

[Madman]

So how would a twelve volt Li-on battery, lets say the 6800 amp hour variety, compare to a twelve volt lead acid battery. In terms of longevity of power output?

 

[treetop]

So how would a twelve volt Li-on battery, lets say the 6800 amp hour variety, compare to a twelve volt lead acid battery. In terms of longevity of power output?

First of all, the 6800 amp hour battery will actually be a 6800 milli amp hour or 6.8 amp hours.
It will depend totally on what size/type of lead acid battery you use.
A typical sealed lead acid battery may only have a capacity of 3.0 amp hours at a 20hr rate,
and also be much heavier.
You will be able to draw a much higher current from the Li-xx battery.

 

[spike]

So how would a twelve volt Li-on battery, lets say the 6800 amp hour variety, compare to a twelve volt lead acid battery. In terms of longevity of power output?

Take a look here.
http://www.mpoweruk.com/performance.htm

 

[gregh]

Take a look here.
http://www.mpoweruk.com/performance.htm

That's a great site for electrical stuff. Really useful.

 

[ge_rik]

Take a look here.
http://www.mpoweruk.com/performance.htm

What a useful site - thanks for the link

Rik

 

[beavercreek]

An excellent site thanks Mike (Spike).
I have may have missed it in the article but it does not seem to cover the new technology NiMH (eneloop..other makes are available) which addresses the high discharge rate of that type of chemistry and keeps the charge for a much much longer time.
I may be mistaken though and have 'skimmed' too quick.

 

[Madman]

So how would a twelve volt Li-on battery, lets say the 6800 amp hour variety, compare to a twelve volt lead acid battery. In terms of longevity of power output?

First of all, the 6800 amp hour battery will actually be a 6800 milli amp hour or 6.8 amp hours.
It will depend totally on what size/type of lead acid battery you use.
A typical sealed lead acid battery may only have a capacity of 3.0 amp hours at a 20hr rate,
and also be much heavier.
You will be able to draw a much higher current from the Li-xx battery.

Interesting. Thanks for your input.

 

[MasterBruce]

Depends upon the type of Lead acid battery whether it is sealed or not, wet or dry. Take a look here: http://www.mrpositive.co.nz/lead-acid-battery-types/