Sam Spade wrote:
mike-s wrote:
Feel free to boil your own batteries while in storage. Other than that, you'd do well to follow your own advice and avoid spreading bad info.
750 ma for maybe two or 3 hours a day will NOT " boil your battery".
It just will not.
You're arguing against demonstrable facts with your unsupported and ill-informed opinion. You're simply wrong, but keep digging that hole.
Sure, 15 V for 2-3 hours for ONE DAY may not damage a battery. But, it will definitely cause gassing. But this is also about leaving the panel connected during "long term storage," and 2-3 hours/day of overcharging over the course of weeks or months with no battery watering certainly can damage batteries.
Providing that bad advice, when the potential damage to hundreds of dollars worth of batteries can be easily taken care of with a <$20 controller (or <$5 voltage regulator) just points to bad intent. You're willing to advise that people put their investment in batteries at risk for the sake of trying to win an argument you've already lost.
Edit: I don't really care whether you accept facts or not. I'm only concerned that someone may follow your bad advice and ruin their batteries, when that's easily and inexpensively avoided. Finally, working at Radio Shack for 50 years doesn't make you an expert.