Get the most out of your batteries with the Batteriser, the battery life extender. Most batteries will give you a low battery sign after only 20% of the energy is used. However, using patented, cutting edge technology, Batteriser is able to further your use of disposable batteries up to 80%. With adapters for AA, AAA, C, and D batteries, Batteriser will fit with most appliances and gadgets in your home. This smart voltage management system uses micro-circuitry to tap into the remaining energy on batteries that is seldom used. The reusable sleeve easily slips over batteries. Made of ultra thin stainless steel, Batteriser is only 0.1mm thick. Start using your batteries to their fullest potential with Batteriser, the battery life extender.