This reminds me \u2014 I need some new batteries. A few of mine just died from overcharging.<\/p>\n
Adventures in Rechargeable Batteries<\/a><\/p>\n For one thing, there’s the issue of discharge rate. It turns out that massive 2500mAh capacity of the Energizer rechargeable battery doesn’t mean much when the battery drains itself within a month. The Wikipedia<\/a> entry on NiMH batteries mentions that the hybrid\/pre-charged batteries have an advance that reduces the discharge rate<\/p>\n A new type of nickel-metal hydride battery was introduced in 2005 that reduces self-discharge and, therefore, lengthens shelf life. By using a new separator, manufacturers claim the batteries retain 70 to 85% of their capacity after one year when stored at 20 degrees Celsius (68F). These cells are marketed as “ready-to-use” or “pre-charged” rechargeables. Besides the longer shelf life, they are otherwise similar to normal NiMH batteries of equivalent capacity and can be charged in typical NiMH chargers.<\/p><\/blockquote>\n (via Daring Fireball<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":" This reminds me \u2014 I need some new batteries. A few of mine just died from overcharging. Adventures in Rechargeable Batteries For one thing, there’s the issue of discharge rate. It turns out that massive 2500mAh capacity of the Energizer … Continue reading
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\nSo putting a larger number on the box is ultimately a method of fooling consumers with marketing. Where have we seen that before? Oh right, everywhere<\/em>. Caveat emptor.<\/p><\/blockquote>\n