52 of 55 people found the following review helpful
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This review is from: Solar 2 in 1 Folding Panel, Power supply, AA and AAA battery charger. (Misc.)
Cons- You have only 2 options on batteries capacity. You must use either 4-AA or 4-AAA batteries during charging. And it's recommended of the same brand and Mah capacity for uniformity. Also, the cables do not include a USB connector to charge your MP3 player or Cellphone directly, but you could work around this with a second dedicated charger for your Cell.
Pros- The solar cells are good quality. At least, my unit was a good one. There may be duds as with any product. Living in Hawaii we have great sunlight. It takes only 5-8 hours to fully charge batteries from a fully discharged condition. Unlike expensive chargers with a built-in lithium battery, you can use any standard NiMH batteries of greater capacity to store your energy. Compare a 2800 Mah lithium capacity to say, 4-AA batteries of 2500 Mah each! When the lithium battery dies in the expensive charger, youre stuck! Not with this. You simply use new batteries. Now, this is what I do --- I can connect this charger and charge another smaller solar charger with an internal battery that does have a USB connector to charge my Cell or MP3 player. So even if the built-in lithium of my smaller charger dies, I simply hook up the chargers and I'm in business. But the important thing is that solar cells are of good quality and really charge in short time. And the fact that you can use any AA or AAA NiMH batteries for storage of power.
One more minor PRO - the battery compartment is separate from the solar panels, so you can protect it from the sun and not have to worry about it melting. Highly recommend.
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Showing 1-3 of 3 posts in this discussion
Initial post: Jan 10, 2015 9:59:25 PM PST
But NiMH batteries have chemical memory, so NiMH batteries will "remember" the charge cycle and will lose overall capacity quickly if you're not charging them from empty to full and using them from full to empty before charging them. Lithium batteries have no chemical memory and can store higher watt hour charge cycles than NiMH AA cells. In essence they break down faster and release less energy. And less output 1.5v per cell vs 1.2v per AA cell. Just saying, you would want the freedom to charge the batteries whenever there is adequate light without worry of half-cycling your NiMH cells.
In reply to an earlier post on Jan 10, 2015 11:16:15 PM PST
[Deleted by the author on Jan 10, 2015 11:17:56 PM PST]
In reply to an earlier post on Jan 10, 2015 11:16:48 PM PST
Last edited by the author on Jan 10, 2015 11:33:04 PM PST
Matthew, Im afraid you have it backwards. But it's understandable. Sometimes these things get confusing. NiMH [NickelMetalHydride] do not have memory and hold more charge than the old NiCad [Nickel Cadmium] batteries. You are confusing these. NiCad's have memory as you say. Also you cannot recharge Lithium batteries in this solar charger. You need a Lithium battery charger.
Please note, since my first writing this over 10 years ago, Ive discovered much better ways of recharging. You can buy a really good solar panel for under $50 [about 12"x12"], use an old battery holder or buy one from a hobby shop, and look for a 1.5V controller or a 3V controller and make your own battery charger custom to your needs. Good luck.
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