Daku
Guest
Sun Jan 15, 2012 6:15 am
I am not very familiar with battery technology, and hence my
query. A few years ago I designed and built a simple sealed
lead acid cell charger. It also had a battery status indicator,
and worked fine. It has been sitting in the drawer since then.
I was wondering if the same can be used for wet lead acid
cells, and if not what modifications are needed ? Thanks in
advance for your hints and suggestions.
boB
Guest
Sun Jan 15, 2012 8:37 am
On Sat, 14 Jan 2012 20:15:08 -0800 (PST), Daku <dakupoto_at_gmail.com>
wrote:
Quote:
I am not very familiar with battery technology, and hence my
query. A few years ago I designed and built a simple sealed
lead acid cell charger. It also had a battery status indicator,
and worked fine. It has been sitting in the drawer since then.
I was wondering if the same can be used for wet lead acid
cells, and if not what modifications are needed ? Thanks in
advance for your hints and suggestions.
In general, it should work fine as long as the charger has enough
current and high enough voltage capability for the particular size of
LA battery you're charging.
Sealed LA (VRLA), Gel or AGM, have a tighter upper and lower voltage
charging limits than flooded LA with removable caps for replacing
electrolyte. Either versions should be temperature compensated for
the finishing charge (Absorption) but the flooded (wet) type will
just boil its electrolyte if too high of voltage is applied which
should be replenished of course.
Best way to know when it's charged is to watch the curent into the
battery terminals while at the absorption voltage and when it falls
below a particular level (the ending amps is one name for it), at that
voltage, the charge is done. Otherwise, holding the absorb voltage
constant for around 2 hours is a good approximation that is used by
many decent chargers.
boB
K7IQ
PeterD
Guest
Sun Jan 15, 2012 2:21 pm
On 1/14/2012 11:15 PM, Daku wrote:
Quote:
I am not very familiar with battery technology, and hence my
query. A few years ago I designed and built a simple sealed
lead acid cell charger. It also had a battery status indicator,
You designed and built it and can't figure out the answer to your
question yourself? Humm... Makes one wonder whether it was good for
anything at all.
Quote:
and worked fine. It has been sitting in the drawer since then.
I was wondering if the same can be used for wet lead acid
cells, and if not what modifications are needed ? Thanks in
advance for your hints and suggestions.
Troll...
--
I'm never going to grow up.
NT
Guest
Sun Jan 15, 2012 6:36 pm
On Jan 15, 4:15 am, Daku <dakup...@gmail.com> wrote:
Quote:
I am not very familiar with battery technology, and hence my
query. A few years ago I designed and built a simple sealed
lead acid cell charger. It also had a battery status indicator,
and worked fine. It has been sitting in the drawer since then.
I was wondering if the same can be used for wet lead acid
cells, and if not what modifications are needed ? Thanks in
advance for your hints and suggestions.
It'll be fine as is. But not vice versa, dont use a flooded lead acid
charger on an SLA.
NT
Jeffery Tomas
Guest
Mon Jan 16, 2012 5:38 am
"Daku" wrote in message
news:cb871b4e-2cb4-4b85-bfe0-9d5b28e5e59f_at_iu7g2000pbc.googlegroups.com...
Quote:
I am not very familiar with battery technology, and hence my
query. A few years ago I designed and built a simple sealed
lead acid cell charger. It also had a battery status indicator,
and worked fine. It has been sitting in the drawer since then.
I was wondering if the same can be used for wet lead acid
cells, and if not what modifications are needed ? Thanks in
advance for your hints and suggestions.
Probably. High charging rates could cause the sealed batteries to rupture.
Something to watch out for. Make sure the batteries do not get too hot(not
good for any type of batteries but more dangerous for sealed than
non-sealed.
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