The ReBoost SmartSleeve fits over rechargeable batteries to bring together the reusability and sustainability benefits of rechargeables with the peak performance capability of alkaline batteries. The SmartSleeve boosts voltage to 1.5 V so rechargeable batteries can now operate in all alkaline-only applications.
An embedded chip continuously manages voltage discharge over the duration of the battery's charge to ensure devices maintain an optimal and more consistent performance over a longer time period. A built-in automatic shut-off circuit prevents devices from discharging below the rechargeable batteries' recommended operating conditions to avoid damage to the rechargeable battery itself and eliminate the risk of toxic chemical leaks, which may lead to fire.
While rechargeable batteries are 700 times more cost effective than alkaline batteries, the risks of using rechargeables in devices designed for alkaline batteries have limited deployment.
The ReBoost SmartShell allows consumers to use AA/AAA rechargeable batteries in C/D alkaline-only devices, eliminating the need to buy expensive single-use batteries. Four AAA rechargeable batteries can be used in place of C batteries while D batteries can be replaced by three AA rechargeables.
The AA SmartShell can be used with a single AAA rechargeable battery to achieve optimal performance and device compatibility in tight-fitting battery compartments. They are currently on crowdfunding site Indiegogo.