Gama Sonic Solar Lights are equipped with high-quality, long lasting, Lithium-ion Batteries. When needed, replacing your light’s battery is an easy DIY task. so you can enjoy your light for more years to come. Boost your Gama Sonic Solar Light with our selection of compatible batteries below. If you are unsure which batteries are needed, simply visit https://gamasonic.com/support/ to find the right battery to your Gama Sonic Solar Light.