Success at last...I made the SLA charger designed by Scott Henion,
Used an old 10 amp Transformer which may be over-kill but it's got
plenty of oomph.
Managed to safely charge a couple of SLA Batteries,using the LM317
which I scrounged out of the part bin..curiously it was in a T0-3 case
I used plenty of heatsinking as it did get warm when in use.
The LED turned on as advertised..altho dimly.
I have it adjusted to 13.8v which is the recommended voltage for standby use of
the battery...the circuit charges at 650 Ma.then tapers off as the Battery Charges.
(Goes into "Float-Mode")
Works well for a simple charger.
Used an old 10 amp Transformer which may be over-kill but it's got
plenty of oomph.
Managed to safely charge a couple of SLA Batteries,using the LM317
which I scrounged out of the part bin..curiously it was in a T0-3 case
I used plenty of heatsinking as it did get warm when in use.
The LED turned on as advertised..altho dimly.
I have it adjusted to 13.8v which is the recommended voltage for standby use of
the battery...the circuit charges at 650 Ma.then tapers off as the Battery Charges.
(Goes into "Float-Mode")
Works well for a simple charger.