Hello everyone,
I am inexperienced with using SLA batteries or any large battery of the kind but I am having some issues with my 12v 18amp SLA battery purchased from bintel 2 months ago (
http://www.bintel.com.au/Accessories...oductview.aspx ). I had it powering the astrotrac over a few nights for a few hours each session and it has been on the charger as well (not over charged, was only on for a few hours at a time since I really have not used it much at all) and I noticed it stopped powering the astrotrac. I bought a multimeter and tested the output, it is running well under the 12-13v that a fully charged 12v battery should be showing (11.8v) and when I connect red to positive and black to negative the astrotrac would not power up.
This is the strange thing, I tried reversing the connections (red to negative, black to positive) and the light on the 12v cable lit up, I did not plug the astrotrac in for fear of damage to the electrical system.
When applying red to positive and black to negative, the multimeter gives me a negative reading but when reversed gives me the exact opposite as per the pictures attached below.
I may need to head into battery world to see what is going on, I am new to this so I may just be missing something?
Any input would be greatly appreciated.
Thankyou!