It seems to me that you really need to have a controller that
monitors the state of charge in order to do a good job of recharging
sealed batteries. If they are low then you can push the voltage up
but if they are in an intermediate indeterminate state as with most
small renewable energy
...@scoraigwind.co.uk wrote:
From: Hugh h...@scoraigwind.co.uk
Subject: Re: [RE-wrenches] Charging AGM Batteries
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Date: Saturday, September 19, 2009, 4:21 AM
It seems to me that you really need
to have a controller that monitors the state of charge
The serious commercial chargers have a deltaI/deltat (current vs
temperature) alogorithm to detect when electrolysis of the electrolyte
begins to occur. Failing that, a Pout vs Pin alogorithm is next best. Both
these make for an expensive controller which is hard to justify in domestic
I have been told that AGM batteries can withstand pretty aggressive charging
rates, with a bulk rate being ½ of C/20. For example a MK 8A8D, with a C/20
of 245 A-h, would start with 122 A. If this is okay, can I still use the
standard 14.6 V value for switching from Bulk to Absorb? What about
] On Behalf Of Peter Parrish
Sent: Tuesday, September 15, 2009 9:33 AM
To: 'RE-wrenches'
Subject: [RE-wrenches] Charging AGM Batteries
I have been told that AGM batteries can withstand pretty aggressive charging
rates, with a bulk rate being ½ of C/20. For example a MK 8A8D, with a C/20 of
245 A-h
HI Peter,
I don't know of any sealed that go above the 14.4v/12v setpoints.
And most I've seen a 14.2 ish.
That said I have seen eq recommendations for industrial sealed, but
with very controlled conditions.
above 14.4 it will start to gas just like a wet battery.
jay
peltz power
On Sep
To: RE-wrenches
Subject: Re: [RE-wrenches] Charging AGM Batteries
Hi Peter,
At least some AGMs (like the Concorde) can handle very aggressive charging
rates, provided you have good temperature compensation to reduce the
possibility of a thermal runaway.
Also the 14.6 VDC is a little
-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter
Parrish
Sent: Tuesday, September 15, 2009 7:33 AM
To: 'RE-wrenches'
Subject: [RE-wrenches] Charging AGM Batteries
I have been told that AGM batteries can withstand pretty aggressive charging
rates, with a bulk
-wrenches.org] *On Behalf Of *Peter Parrish
*Sent:* Tuesday, September 15, 2009 7:33 AM
*To:* 'RE-wrenches'
*Subject:* [RE-wrenches] Charging AGM Batteries
I have been told that AGM batteries can withstand pretty aggressive
charging rates, with a bulk rate being ½ of C/20. For example a MK 8A8D
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