Hello all! I'm a noob, and this is my first post. Has anybody had experience with the Tenergy 3A 36V Ni-Mh charger mentioned by Monstarr. It receives 2.5 out of 5 stars from the selling site all-battery.com and can be purchased cheaper at Amazon.com ...Problem is I too bought a used Giant Suede with its 2 original batteries and the charger. It rode fine during the test ride, but when I got it home the charger starting its blinking lights indicating it was charging correctly, and thus not charging. I thought the batteries were bad, and soldered up a new series of D-cells, soldered the old terminals up to them with [including the two resistors and the temp sensor (not sure if either of those are good, and if they may in fact be part of the problem)], but the charger still indicates with its blinking light that there is a problem charging. Any help or advice is appreciated...TIA!