C/5 - C/30 ? [RE-wrenches]

[Joel Davidson]

Hi Jay,
Industrial Battery Engineering at http://www.ibe-inc.com/html/altenergy.htm
is very knowledgeable about forklift batteries and chargers and PV.
Joel Davidson

Original Message:
-----------------
From: Jay Peltz, Peltz Power jay at asis.com
Date: Thu, 5 Oct 2006 09:04:48 -0700
To: RE-wrenches at topica.com
Subject: Re: C/5 - C/30 ?  [RE-wrenches]



Hi All,

I think we must clarify what type of charger we are talking about.
PV or battery charger ( ie inverter/generator etc)

For PV, most people don't have enough to do a C/10 let alone a C/5 rate.
For generator, most systems I've seen again most people don't have C/ 
10 or C/5.
It takes a really big charging source to get to those rates.

One other point is that most chargers back off on current once the  
charge voltage setpoint has been reached.
The only chargers that I know of that don't are  the big industrial  
units.

So I think the main issue is what Bob-O discussed which is do L-16's/ 
T-105's, need to be charged to high voltages
( 30v on 24v system) often?

My 2 cents is that I have found that the capacity of the battery is  
larger  the higher you charge the batteries
IE    29.5v vs 28.5v has been around 15-20% capacity gain.
But maybe this shortens the life?

However it would be interesting to get ahold of the charger that they  
use for commercial charging of L-16's to see where they charge to, or
for golf carts?

Thanks,
jay

peltz power


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