Cycle Fan Posted October 13, 2009 Author Posted October 13, 2009 It appears as if the battery pack has a built-in charging circuit then' date=' because that's just a normal 12v DC tranformer... 2x Li-ion is 7.2 or 7.4v. You can use a 12v DC adaptor then. Any amperage above 1A will work. Just check the polarity adjustment! Regards Johannes [/quote'] So can I use the Ellies one I bought? Thanks again for the help
Brighter-Lights Posted October 13, 2009 Posted October 13, 2009 Yes, the blown on eis 12v DC 850mA... so the Ellies one should work... (if it's a 1A... 500ma won't work)
Cycle Fan Posted October 13, 2009 Author Posted October 13, 2009 GREAT! Again, thanks for the advice!!!
dollar Posted October 13, 2009 Posted October 13, 2009 Quote [ If you cannot find a replacement give the old one to an electronicsguru. Power supplies are not that hard to decode. The flashing lightsin the light that indicate charging/full, suggest that it's a dumbcharger - the brain may be in the light? ] The brain is in the light?
bradjackson Posted October 14, 2009 Posted October 14, 2009 Cycle Fan, did you manage to sort your charger out in the end? I am picking up on this thread rather late, but I just wanted to add my R0.02 on the dangers of using any old charger to charge Li-Ion batteries. In case anyone else reading this thread decides to try this recommendation. As already mentioned, Li-Ion batteries will get damaged by using the incorrect charger, but more importantly, there is a real risk of your batteries exploding and setting your house on fire (or worse), if you use the wrong type of charger. Li-Ion's require a specific charging algorithm in order to prevent nasty things like internal short circuits inside the battery, which can start a chain reaction with a not-so-happy ending. Bottom line: Only use a properly spec'd Lithium Ion charger to charge Lithium Ion batteries!! Same applies for Lithium Polymer.bradjackson2009-10-14 06:07:47
Brighter-Lights Posted October 14, 2009 Posted October 14, 2009 The part that was blown is a normal DC adaptor... so he's sorted...
dollar Posted October 14, 2009 Posted October 14, 2009 Agreed. The thing is that in this case, the current limiting and temp sensor is with the light and the charger is nothing more than a mains transformer. So - you can use pretty much any "power supply" - as long as the voltage is correct and it can supply the current required - in this case 800 ma. In fact you could charge this light off a car battery!
christophercjc Posted September 5, 2016 Posted September 5, 2016 Hi Jo, I couldn't get a decent enough pic of the sticker so I emailed you the wording. Here it is again: AC DC Power SupplyClass 2 TransformerModel No: MD242-120085INPUT: AC 120V 80hz 24WOUTPUT: DC 12v 850mAPolarity: - -(�------- + Thanks again for the help, really appreciate it!Hey dude, I'm in the same boat.... well, not exactly - I didn't FRY mine haha, but I did lose it. I have a variable charger, but before I plug it in, I need to know the polarity please. You have pasted a polarity 'thing' but I'm not sure how to read it (and I'm not a betting man...)
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