From: pierce@scruznet.com (john r pierce)
Newsgroups: rec.photo.equipment.misc,rec.photo.equipment.medium-format,rec.photo.equipment.35mm
Subject: Re: Turn your Vivitar 283 into a workhorse. WAS: Re: What external battery for Vivitar 283(5)?
Date: Thu, 18 Jul 1996 05:16:25 GMT
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stdwsr@unx1.shsu.edu (WILLIAM S. ROWELL) wrote:
>Zeming Gao (zeming@u.washington.edu) wrote:
>: 6V/8amph battery> $16
>: RCA plugs from Radio Shack: $2
>
>What kind of charger do you use to avoid overcharging, or is this even
>a problem? I've heard of "floating" chargers; do these trickle charge
>after the full charge is complete, by any chance?
Um, if you just keep the charge voltage under about 6.7 volts, and
current limit it to less than an amp or so, you'll fully charge these
lead acid batteries in about 8-10 hours... I wouldn't leave a lead
acid on the charger over 24 hours.
Those batteries do not like deep discharge cycles much tho... unlike
nicads, you should keep a lead-acid fully charged, and recharge it
shortly after any use, however small... If you fully drain the
battery, and fully charge it, it will only last a few 100 charge
cycles max (and get weaker and weaker as it goes).
-jrp