Comments on: Lithium Ion Batteries http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/ Ed Ring's EcoWorld Posts Sun, 5 Jul 2009 04:52:13 +0000 http://wordpress.org/?v=2.7.1 hourly 1 By: plobby http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/comment-page-1/#comment-82638 plobby Sun, 27 Apr 2008 04:24:39 +0000 http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/#comment-82638 Hey, batteries. It's true that li-ion batteries do not suffer from the memory effect, but they should be fully discharged now and then because the battery's level indicator suffers from similar effect: "Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as "digital memory". Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate." http://www.batteryuniversity.com/parttwo-34.htm Hey, batteries. It’s true that li-ion batteries do not suffer from the memory effect, but they should be fully discharged now and then because the battery’s level indicator suffers from similar effect:

“Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as “digital memory”. Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery’s state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate.”

http://www.batteryuniversity.com/parttwo-34.htm

]]> By: batteries http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/comment-page-1/#comment-82001 batteries Thu, 17 Apr 2008 03:46:35 +0000 http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/#comment-82001 There are several steps you can take to help you get maximum performance from your power tool battery: Prevent Memory Effect - Keep the power tool battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries which do not suffer from the memory effect. There are several steps you can take to help you get maximum performance from your power tool battery: Prevent Memory Effect - Keep the power tool battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries which do not suffer from the memory effect.

]]> By: kert http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/comment-page-1/#comment-1358 kert Mon, 04 Sep 2006 16:39:17 +0000 http://www.ecoworld.com/blog/2006/08/11/lithium-ion-batteries-for-cars/#comment-1358 Toshiba has not brought their fast-charge Li-Ion battery to market. In fact, apart from that one press release, they haven't said a peep about it. The only company having a fast-charge capable lithium battery on market is A123Systems. They power the DeWalt 36V power tools. Toshiba has not brought their fast-charge Li-Ion battery to market. In fact, apart from that one press release, they haven’t said a peep about it. The only company having a fast-charge capable lithium battery on market is A123Systems. They power the DeWalt 36V power tools.

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