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Re: (ET) Breaking in a new pack
- Subject: Re: (ET) Breaking in a new pack
- From: "David Roden (Akron OH USA)" <roden ald net>
- Date: Sun, 25 Aug 2002 22:24:48 -0400
- In-reply-to: <Pine LNX 4 21 0208251651530 4847-100000 toad-hall ev ithaca ny us>
- References: <3D669DB0 C7F2CFD7 realns com>
- Sender: owner-elec-trak cosmos phy tufts edu
On 25 Aug 2002 at 16:55, Steve Gaarder wrote:
> I'd like some advice
> on breaking them in.
First, I'd give them a long, slow equalizing charge before running them
first time. If you have a good constant-voltage 36v charger, charge at
volts until current falls to 5 amps. Then hold current at 5 amps for
hours, or until ON-CHARGE voltage stops rising, or until ON-CHARGE
voltage hits 45 volts.
If you have a good automatic 12 volt charger, you can do this individually
each of the three 12v series pairs.
Unfortunately the GE charger is really too crude for this. If that's all
have, just charge as you would any other battery and don't sweat it.
The other part of the break-in is to cycle them shallowly at first --
10%, then 20%, working up to 50% of capacity per cycle. Batteries that
new, or haven't been used for a while, are like athletes that have gone
They need to work up to their peak level gradually.
For sure don't over-discharge them when they're new. That is, don't run
until the tractor stops.
The Landis controller doesn't really have anything to do with this. It's
for sort-of-float-charging batteries that won't be used for several months.
Can anybody think of any other suggestions?