"I don't think I've ever met a person who didn't love the flickering, flashing, and glow of fireflies. Some folks have the good fortune to live in a place where they can..."


There are more than 2000 species of fireflies in the World and we've collected a wide variety of resources for kids and adults to learn more about these wonderful 'bugs'.

 

 


Rechargeable AA Ni-Cd Solar Batteries
LEARN ABOUT RECHARGEABLE BATTERIES for SOLAR LIGHTING BELOW

Four (4) AA - Ni-Cd Solar Rechargeable Batteries - 600mah AA NiCd Solar Rechargeable Batteries

Rechargeable AA Ni-Cd Solar Batteries

 

LEARN ABOUT RECHARGEABLE BATTERIES for SOLAR LIGHTING

Currently Firefly Magic® Firefly Lights supply only Nickel Cadmium (Ni-Cd) batteries in Solar Powered lighting products rather than the newer Nickel Metal Hydride (NiMH) rechargeable batteries, and here's why . . .

We receive questions about this as NI-Cd batteries are becoming more difficult to source, and they are considered less "environmentally friendly" due to a very small amount of Cadmium sealed inside.

Because of this, Ni-Cd batteries should always be recycled, or disposed of at special waste centers that accept products like fluorescent lights, computer monitors, and old cell phones.

So why are we still using them? Simply put, Ni-Cd batteries are far more reliable than NiMH batteries in the harsh outdoor environments where Solar Lighting is typically installed.

Whether its in an Arizona desert landscape where battery temperatures can reach 140°F in the summer, or below 0°F in the Canadian winter, Ni-Cd batteries have proven to work consistently better than NiMH batteries, and they typically can last for two years or longer.

On the other hand, NiMH batteries have developed a very bad reputation for reliability in outdoor lighting products. NiMH rechargeable batteries sometimes last only a month or two in hot and cold weather conditions. In addition, NiMH batteries are not designed for the very low trickle charging that outdoor lighting solar panels typically provide.

We're always concerned about our customers and the environment and we know that if recycled correctly, Ni-Cd batteries do not pose a threat to either.

To further explain the differences between the two battery types, please review the chart below:

 

Nickel Cadmium
(Ni-Cd)
(Used in Firefly Magic® products)

Nickel Metal Hydride
(NiMH)

PROS

- Reliable and Stable
- Resists abuse
- Can have high discharge rates
- Can be used over wide temperature range of -20C to +60C reliably
- Excellent for 'trickle charge' from low voltage solar cells

- Higher energy density than Ni-Cd

CONS

- Cadmium that's sealed inside the battery is not considered 'environmentally friendly requiring batteries to be recycled

- Poor low temperature performance & can be damaged if charged in sub-zero temperatures
- Poor high temperatures performance as charging efficiency drops to 25% when hot
- Low cycle life
- Can require new charger or upgrade
- Higher internal resistance causing more rapid voltage drop
- Higg self discharge rate (while stored)
- Poor 'trickle charge' characteristics


Four (4) AA - Ni-Cd Solar Rechargeable Batteries - 600mah AA NiCd Solar Rechargeable Batteries

 

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