The Astron line has a suffix on their part numbers, "BB,"
which refers to Battery Backup.
The battery backup feature allows the user to attach a flooded or
VRLA (gel) cell to the output and while the power supply is
not under operating load it will keep the battery plant
charged at the point where the final charge voltage is just
a few hundredths of a volt higher than the reference voltage of
the battery cells. This feature prevents these cells from overheating the
dielectric medium, generating excess hydrogen (in VRLA's) and possibly
cracking cases and leaking caustic materials.
Even auto batteries will boil out if the charge voltage exceeds the battery
reference voltage, and that's why these type cells need regular topping
up with distilled water.
Hal
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Vic K2VCO
Sent: Thursday, August 03, 2006 4:46 PM
To: Harold Mandel
Cc: amps@contesting.com
Subject: Re: [Amps] Hercules II power supply
Harold Mandel wrote:
> Is your power plant an RS70 BB?
>
> This is the kind that can float a battery charge and
> not end up with a thermal runaway.
There isn't a nameplate. But it says "RS-70A" on the front panel. So I
suppose the answer is 'no'. I'm aware of the issues involved in
charging lead-acid batteries with a fixed voltage power supply, so this
is another reason I'm a little wary of batteries.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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