Low-self discharge 9v NiMH batteries have recently become available from Tenergy and Maha. Low-self discharge means these batteries will hold their charge for a year, unlike previous NiMH batteries. Update November 2012: Accupower has released a 300 mAh 9 Volt Rechargeable NiMH Battery — this currently the highest capacity rechargeable 9V. Ansmann has released a low-discharge 250… [Continue Reading]
The best rechargeable D size batteries are the new LSD Ni-MH (low self-discharge Nickel-Metal Hybride) cells. These new Ni-MH rechargeable batteries are able to retain a charge for a year, making them suitable for using in flashlights and other low-term applications. See also our full review of the Best AA Rechargeable Batteries and Chargers.
The new nPower PEG (personal energy generator) by Tremont Electric wowed reviewers at the 2011 CES convention. This back-up hybrid charger allows you to keep your cell phone, iPod, or other hand-held device working while you’re on the go. By harnessing the kinetic energy that you produce through movement, then converting it into accessible power,… [Continue Reading]
One of the best charger/battery series available. The batteries are rated at 2400mAh – one of the most powerful out there. Quick charges in about an hour, then switches to trickle charge. Comes with a 12V adaptor. Purchase from: Amazon ($29.88)