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Moonrays 97125 Rechargeable NiCd AA Batteries for Solar Powered Units- AA- 4-Pack specifications:

Moonrays 97125 Rechargeable NiCd AA Batteries for Solar Powered Units, AA, 4 Pack Description:
CCI Moonrays 97125 Rechargeable NiCd AA Batteries for Solar Powered Units, 4 Pack, AA. Intended particularly for solar lights. This pack included 4 Piece of 600 mAh AA NiCd batteries.

Moonrays 97125 Rechargeable NiCd AA Batteries for Solar Powered Units, AA, 4 Pack Reviews:

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39 of 48 people found the following review helpful:

1.0 out of five stars
Don’t annoy with this outdated product,
July 29, 2008

By&nbsp,NLee the Engineer Nashua, NH See all my reviews
TOP 50 REVIEWER
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there’s simply no reason why anybody should purchase those NiCd Nickel Cadmium rechargeable cells for solar rechargeable light applications. For about the same price, you may be able to easily find NiMH Nickel Metal Hydride cells which offer the following advantages:

Higher capacity: NiMH AA cells are usually 2000 2700mAh, compared of just 600mAh for those NiCd cells.

No memory effect: NiMH cells are less probably to suffer from reduced capacity when they’re partially charged and discharged.

Environmentally Friendly: NiMH cells don’t contain Cadmium, a greatly toxic heavy metal. Ended NiCd cells must be disposed in special battery recycle bins, but majority of people do not annoy to do that. So those cells end up buried in landfill or, worse still, incinerated.

The only advantage NiCd cell has over NiMH is lower interior resistance, which lets it to offer high peak current in short bursts. That is why NiCd cells are used in cordless power tools and RC race cars. But in the case of solar rechargeable lights, the battery current is delievered gradually over 8 12 hours. So NiMH cells, with much higher capacity, are far superior as substitute batteries.

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Eleven of 13 people found the following review helpful:

5.0 out of five stars
Tested with Moonrays Solar Path Lights,
July 1, 2009

By&nbsp,B. Anderson “Gadget/Outdoor aficionado” Seattle, WA See all my reviews
REAL NAME
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When I bought my CCI Moonrays 95669 Solar Powered Metal Path Light, 6 Pack, Copper I decided from the beginning to switch out batteries in half of the lamps with the other battery types because I had read the other review for this battery pack.

Honestly, I found these work better throughout the night over a longer time period. On occasion I wake up early in the morning for work, and noticed that the lamps with the batteries lasted longer and lighter into the morning. It was a couple months since i got the lamps and will certainly buy these batteries again.

I decided to do a little research on Wikipedia to find the reason.

These Moonrays batteries are Nicd, on the page it says “The main trade off with NiCd batteries is their higher cost”

But the advantage it says is

“the NiCd battery has a lower self discharge rate for example, 10 per month for a NiCd, versus 30 per month for a conventional NiMH under same conditions”

That means that over time, these batteries will hold their charge longer than others.

The other kind of rechargeable batteries are the NiMH batteries, and their page also says

“NiMH cells historically had a somewhat higher self discharge rate equivalent to interior leakage than NiCd cells. This isn’t a problem in the short term, but makes them unsuitable for many light duty uses where the battery could usually be projected to last many months or years.”

Wow I am a nerd. But it makes me happy

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Four of four people found the following review helpful:

5.0 out of five stars
Great batteries,
October 21, 2009

By&nbsp,D. Chiodo “Dee Nice” Chicago, IL See all my reviews
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Verified PurchaseWhat’s this?