Hi, are lead acid battery's suitable to be used as a power supply for my electrical projects as I do not have a good power supply to hand and need around 5-7amps of current @ 12v, I can get hold of lead acid battery's very cheaply and have a charger.
And also I have read that they let off hydrogen gas, is this a safety concern if when connecting and disconnecting alligator clips from the terminals and sparks being created.
I plan to use this for powering my circuits and this includes things like flyback transformer drivers so again sparks and hydrogen could be a concern.
as 4 me, Lead acid bat (I assume car battery). needs so mush attention, like maintain the acid level, hazard of over charging, weight and size. If you can handle them, dont forget to use diode for protection of cct.
use a diode (big or small depending you) by foword biasing the vcc from the + terminal of your battery to the vcc terminal of the cct. this prevent burning of components during polarity mistakes.
use a diode (big or small depending you) by foword biasing the vcc from the + terminal of your battery to the vcc terminal of the cct. this prevent burning of components during polarity mistakes.
Thanks for the replies, I will be sure to put some kind of protection in my circuits that I plan to use this battery to power. (Note I do not intend to use these battery's for always turned on type projects but rather stuff that I will be powering off after use such as fly-back transformer drivers).
So as far as using these types of battery's, is there any risk of the sparks of high voltage arcs igniting the hydrogen gas produced by the battery's?
I will be charging them in a safe vented place well away from any of my projects.
Unless you put the battery in a sealed box, I wouldn't worry about it. Besides, if you obey the charging restrictions in the link I posted, an SLA should never vent anything. Only if you abuse it by overcharging it would it vent.