I can run my monochrome sonar unit all day for 2-3 days on a single charge with my 7 ah battery that is about 5 years old. I don't -- I recharge every day (on the rare occasions that I use it), and that's why my battery is so healthy. It only takes a couple of hours on a Battery Tender, which IIRC charges at 1.5 amperes. I know that the color units with all the fancy stuff on them draw a lot more power, but it still doesn't sound right that you're running it down that fast and taking that long to recharge. I'd have the battery and the charger checked. And your LEDs shouldn't be pulling that much juice. It sounds like something's defective.