Brand: Camelion. MPN: NC-AAA300-BP4. Camelion NC-AAA300-BP4: Some things you should know about Solar Batteries! Solar light batteries are low capacity rechargeable batteries. The small solar panels on your solar light can only produce a low amount of energy from the sun each day. Low capacity cells are used so that the solar light batteries can be fully charged in a day and ready for use that night. If too high of a capacity cell was used the solar panel would not be able to charge the solar light battery enough for the solar light to work. The solar light batteries in your solar light should indicate a "mAh" rating on the label. The mAh stands for milliamps which is how much energy the battery can hold. The more milliamps the battery holds the longer your solar light will run at night. There are two main types of solar light batteries Nickle-Cadmium and Nickle Metal Hydride. Either battery should work in your solar light. As long as the capacity of the solar light battery you are replacing is similar to the old one with your solar light will charge the solar light battery with no problem. Most solar lights come with batteries already installed into the lights. These solar light batteries have a life span of two to three years of good performance. If the solar lights are starting to go dim this is mainly due to the batteries in the light needing to be replaced with new solar light batteries. We would like to suggest that you first test the solar light be replacing the solar light batteries with a normal alkaline battery. If the solar light returns to its normal brightness it is time to get new solar light batteries. If the light still does not function then the solar light needs to be replaced. Make sure when you do test your solar light that you place it in a dark room so that the light sensor will trigger the solar light to turn on. Most solar lights have a battery compartment that be found inside under the cover of the light. This will have a battery door that you can open and replace the solar light.