Message-ID: <3C6BD5FC.9080004@regandesigns.com>
Date: Thu, 14 Feb 2002 07:21:32 -0800
From: Brent Regan <Brent@regandesigns.com>
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To: Lancair List <lancair.list@olsusa.com>
Subject: Re: Batteries
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>>
Gary asks:

<<

> What voltage is your regulator set for charging? The Panasonic specs list
> 2 voltages - one for trickle (like in a UPS) and one for deep cycle 
> (like a
> golf cart). There isn't a spec for aircraft (auto) type usage.

 >>

The trickle voltage is intended to hold the charge in the battery and 
prevent self discharge. The cycle voltage is for charging a battery that 
has lost a significant amount of its charge. I use the low end of the 
cycle voltage or 14.5 VDC and 29.0 VDC for 14 and 28 volt systems 
respectively. Remember that the alternator is a 3 phase AC generator 
that has an internal full wave bridge rectifier (6 diodes) so its output 
is rectified AC (DC with a lot of ripple). Be sure to measure your 
charge voltage at the battery terminals so you read what the battery is 
seeing and not what the alternator is producing.

Regards
Brent Regan

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