That sounds like one Super buy. For that money I'll pick one up as a spare
auto-charger.
-----Original Message-----
From: [EMAIL PROTECTED]
[SMTP:[EMAIL PROTECTED]]
Sent: Friday, February 09, 2001 9:26 AM
To: [EMAIL PROTECTED]
Subject: RE: [RCSE] Lithium Ion Battery Charging
I'm going to try out the evaluation board for the National
Semiconductor
LM3647 universal battery charger. $59.00 US. I have it, but haven't
played
with it yet.
http://www.national.com/pf/LM/LM3647.html
Auto-adaptive fast charge
High-resolution, accurate voltage monitoring prevents Li-Ion
undercharge or
overcharge
Fast charge, pre-charge and maintenance currents are provided.
Different
currents are selectable via external resistors.
Fast-charge termination by [Delta] temperature/[Delta] time, maximum
voltage, maximum temperature, negative [Delta] voltage and maximum
time
Dynamically detects battery insertion, removal, short circuit and
bad
battery without additional hardware
Supports charging of battery packs with 2-8 cells of Ni-Cd/Ni-MH or
1-4
cells of Li-Ion (1 cell of NiCd/NiMH can be supported by added
external 2x
voltage amplifier)
Three optional LED indicators and Buzzer output indicate operational
modes
Ni-MH/Ni-Cd charge mode, Li-Ion charge mode or discharge mode can be
selected manually
Supports control of current feedback power supply and constant
current power
supply
~Barry Murrill
-----Original Message-----
From: SailplaneBoy [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 08, 2001 9:19 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: [RCSE] Lithium Ion Battery Charging
Hey Gang,
I have some 3 volt Lithium Ion batteries that I love. The Only
Problem
is that I have no way to charge them. I've seen Shredair's Orion
Charger,
but its out of my price range. Does anyone know of a good lithium
ion
charger for under two-hundred dollars, or even under one hundred
dollars?
I'd love t know where I could get one in my price range. I would
never have
to charge at the HL field again.
Thanks,
Erik Alber
"The Resin Head"
http://SuperSailplanes.freeservers.com
http://NuanceHLG.8k.com
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