Built tough to withstand the harshest and most extreme environments Leadsun’s lithium battery’s and smart protection features are up for the challenge; Our lithium battery’s are able to work in extreme heat of up to 65 degree celsius & some products can even have an optional thermal heating module added to keep the lights operating in sub freezing conditions as low as -40 degrees. Additionally, Our newly designed battery packs offer multi-protection technology that allows the ‘individual’ battery’s to work normally even in the unlikely event that some battery’s become damaged.