Ion Battery
Ion Battery
How do you create a circuit that will disconnect the current when a lithium ion battery becomes fully charged?
Electrical enginnering people and hardware hacking people. Please help me figure this one out. Charging Lithium Ion batteries is a more delicate process that charging NiCd and NiMH batteries. I was told by the local Radio Shack walking book of knowledge that charging Lithium ion batteries requires more control as the lithium ion cells may be damaged easily if the current is not disconnected at the final stages of a full charge. He suggested that I not try to charge lithium ion batteries with a direct current. He stated that there needs to be a circuit like that which is present in a cellphone, pda, or ipod that will limit current as the battery reaches it's charge. What do you know about this?
Well, NiCd and NiMH batteries can be charged and stop charging at full charge without the help of some device to determine if it's full. Once the NiCd and NiMH is full, the current will just pass through and waste your electricity (and if it's left charging at full charge for extended periods, it can also damage the batteries). So it doesn't actually disconnect the current. Just passes through.
But in Lithium ion batteries, you need some kind of device to determine if it's fully charged. Cellphones, PDA, and iPods kinds of turn on (like, it shows the charging display, but it's not actually on and in your normal thing) when it's plugged into a current so it can detect if it's fully charged. So basically, the device is the mini-computer that determines the charge of the battery.
So, to answer your question, don't try to create a circuit that will disconnect the current when a Lithium Ion battery becomes fully charged, unless you have the capability, materials, time, and patience to do it. And steady hands. It's really tricky to build a Lithium Ion Battery charger.
PS Penguins!!!
Lithium Ion battery fire
Find Ion Battery On eBay Below:
 NEW HP EV087AA Lithium Ion Notebook Battery US $100.99 
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 NEW Battery Biz Lithium Ion Notebook Battery B 5370 US $115.99
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 Sanyo Eneloop 8 Pack AA NiMH Pre-Charged Rechargeable Batteries List Price: Sale Price: $21.39 You save: $5.60 (21%)  Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionFrom the Manufacturer Why Sanyo eneloop? Sanyo eneloop rechargeables can replace an entire kitchen drawer's worth of dry cell batteries You already know the benefits of using conventional rechargeable batteries... Features
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 Sanyo Eneloop AAA NiMH Pre-Charged Rechargeable Batteries (4 Pack) List Price: Sale Price: $8.91 You save: $6.08 (41%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionSanyo Eneloop AAA Pre-Charged Rechargeable Batteries are perfect for TV remotes, portable flashlights and more. These batteries are pre-charged and ready to use right out of the pack. Their extremely slow self-discharge rate maintains 85 percent of their capacity after 1 year of storage... Features
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 Sanyo Eneloop 4 Pack AA NiMH Pre-Charged Rechargable Batteries w/ Charger List Price: Sale Price: $17.95 You save: $4.04 (18%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionOnce charged, eneloop keeps its charge even if you store it for 6 or 12 months without use / No more worries about the state of charge of your battery Features
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 Maximal Power DB CAN NB-6L Replacement Battery for Canon Digital Cameras/Camcorders Sale Price: $6.95 Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionMaximal Power, NB-6L Lithium-Ion battery for Canon Digital Camera/Camcorder, 1000 mAh, White Features
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 Canon CB-2LV Battery Charger for the Canon NB-4L Li-Ion Battery List Price: Sale Price: $23.48 You save: $26.51 (53%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThe Canon CB-2LV battery charger is for the NB-4L battery pack for the Canon Powershot SD200, SD300, SD100, SD110, SD430, SD450, SD500, SD550, SD600, SD630 and SD700 Digital Cameras. Features
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 SANYO eneloop 4 Pack AA NiMH Pre-Charged Rechargeable Batteries List Price: Sale Price: $10.49 You save: $4.50 (30%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product Descriptioneneloop is a new type of battery, which satisfies your needs and expectation in an unique way. This battery can be used right after purchasing, has a high performance, has a long shelf life with no loss of energy, can be used everywhere, environmentally friendly and easy to use... Features
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 Kodak Li-Ion Rechargeable Battery/KLIC 7004 List Price: Sale Price: $16.18 You save: $29.95 (65%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionKodak Li-Ion Rechargeable Battery/KLIC 7004 Features
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 Duracell Value Charger With 4AA Pre Charged Rechargeable Nimh Batteries, CEF14DX4N List Price: Sale Price: $13.03 You save: $3.26 (20%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionDuracell Value Charger with 4AA Pre-Charged Rechargeable NiMH Batteries - CEF14DX4 Features
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 Canon LP-E6 Battery Pack for Select Canon Digital SLR Cameras List Price: Sale Price: $57.95 You save: $42.05 (42%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThe Canon LP-E6 Lithium-ion Battery is approximately 30% more powerful than the previous BP-511A with 1800 milliamp-hours capacity, vs. 1390 mAh for the previous-generation BP-511A. Features
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 Panasonic DMW-BCG10 ID Secured Battery for Select Panasonic Cameras List Price: Sale Price: $28.29 You save: $21.66 (43%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionPanasonic DMW-BCG10 ID Secured Battery for LUMIX FeaturesID Secured Battery for select LUMIX Digital CamerasBattery InformationBattery Rechargeable: YesBattery Size: ProprietaryBattery Chemistry: Lithium Ion (Li-Ion)Battery Capacity: 895 mAhBattery Energy: 3... Features
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