The A&A Engineering one is very nice too and also over $100 (let me know if
you need me to look up the details but should be easy to find). It was in
an article in QST 5-6 years ago as a construction project, but you could buy
them from A&A assembled. Has kept a battery well maintained on a repeater
since then. Well designed and very gentle on the battery. Dan KI6X
-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
Behalf Of doc@kd4e.com
Sent: Thursday, January 13, 2011 5:34 PM
To: RFI List
Subject: [RFI] Battery Maintainers & RFI
Many of us would benefit from a reliable battery maintenance
charger for backup and portable batteries - but the problem
has been suffering overcharge or troublesome cycling.
In the search for a low-RFI and properly designed battery
maintenance charger I have found the following. Sure would
appreciate any experienced/informed feedback about specific
models.
The Xantrex TrueCharger appears to be intentionally RFI-free
and designed for relibility ...
http://www.xantrex.com/power-products/battery-chargers/truecharge-2-2.aspx
... but they are $116. for the base model:
http://www.shopping.com/Xantrex-Technology-Xantrex-Trucharge-10-10a-1-Bank/p
roducts?redir=1&BSC=1
Then there are a variety of maintainers that also claim desulfating
circuitry, and they may be found for between $9.99 (on sale) up to
$59.
<http://www.batteryminders.com/batterycharger/catalog/BatteryMINDer-Plus-12-
Volt-133-Amp-Charger-Maintainer-Conditio-p-16134.html>
http://www.harborfreight.com/automotive-motorcycle/battery/15-amp-three-stag
e-onboard-battery-charger-maintainer-99857.html
http://www.amazon.com/Schumacher-SE-1-12S-Automatic-Onboard-Battery/dp/B0000
AXTUY/ref=pd_sim_auto_3
http://www.toolking.com/tool-accessories/batteries-chargers/automotive-batte
ry-chargers-starters-maintainers/schumacher-se-1-12s-1-5amp-fully-automatic-
on-board-maintainer-and-charger/
http://www.thetoolwarehouse.net/p-5060-schumachercharge-express-se112s.aspx
Walmart had this one on display today:
Schumacher XM1-5 Maintainer, 1.5-Amp $20.
http://www.walmart.com/ip/Schumacher-XM1-5-Maintainer-1.5-Amp/15140193
I guess we'd have to know what microprocessor and circuit they are
using to know how it really functions and if it does not trash nearby
radios. Anyone checked one out?
--
Thanks! & 73, KD4E
David Colburn http://kd4e.com
Have an http://ultrafidian.com day
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