The Best Rechargeable Batteries and Chargers Of 2016

sanyo091105_eneloop_02_b

In A Nutshell Here are my recommendations for the best rechargeable AA batteries: If you want the best energy capacity (2500 mAh) — get the Eneloop Pro If you want maximum recharge capacity (2100 times) — get the 4th Generation Panasonic Eneloops (800 mAh) If you want to save some money and don’t mind a little less performance from your …

The Best 9V Rechargeable Battery

ebl-lithium-ion-9v

In A Nutshell The highest-capacity 9V rechargeable: Accupower’s 300 mAh 9 Volt Rechargeable NiMH Battery The best low-discharge 9V rechargeable: Tenergy Centura 9V 200mAh Low Self-Discharge NiMH Rechargeable Batteries The best lithium-ion 9V rechargeable: EBL 9V Lithium Ion Batteries The Details Low-self discharge 9v Ni-MH batteries have become available in the last few years. The “low-self discharge” label means these batteries …

The Best Rechargeable D Size Batteries & Chargers

imedion_batteries

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. 

Best Electric Bikes For 2012

Kalkhoff Electric Bike

The past year has seen an abundance of bike manufacturers entering into the electric bike arena with slick, lightweight and powerful bikes. Despite misconceptions, electric bikes allow commuters to increase their range safely and arrive to the office smelling fresh, while still getting exercise (yes, you still have to pedal an electric bike) and reducing their carbon footprint. They also …

Personal Energy Generator Recharges Your Electronic Device While You Move

The 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, the nPower PEG allows you to …

Electric Cars Making A Comeback In 2011

2011 is being heralded by auto industry insiders as the “year of the electric car”. Though we here at Metaefficient endorse a life free of dependency upon cars, 100% electric vehicles are certainly more fuel efficient than internal combustion vehicles and may be on their way to becoming user-friendly as well. For 2011 consumers interested in electric vehicles will have …

Better Place Shows Electric Taxis Working in the Real World

Shai Agassi, founder and CEO of Better Place, has a vision — a vision for a world free of oil dependency. Mr. Agassi, who is well on his way to making this vision a reality, has what he believes is the solution for making electric vehicles efficient and affordable. He theorizes that the only way to take electric vehicles into …

The Best Battery Chargers (For D and C Size Batteries)

best-charger-d-size-batteries

We briefly reviewed battery chargers in a previous post “The Best Rechargeable AA Batteries“. But let’s take a look at the best “Universal Battery Chargers”. These are chargers that can handle AAA, AA, C, D sized cells, and well as 9V cells.

Review: The Best Flashlights (2008 Update)

Update: See our newer post The Best Flashlights Of 2009 What are the most efficient flashlights available today? We think LED-based flashlights are the only ones worthy of consideration. LEDs will shine longer than other bulbs, and can withstand shocks and temperature extremes. The best LED flashlights incorporate bright, high-quality LEDs with regulatory circuits that insure a consistent, long-lasting light. …