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   Built-in rechargeable battery protection circuit.
   Strict Li-ion battery circuit management.
   100% compatible with original equipment Li-ion chargers.
   Lithium Ion rechargeable LENOVO battery, no memory effect and environment friendly.
   100% OEM compatible and stable performance.
   Certification: CE, CCC ,ISO9001,UL,CUL.

How to Charge the Li-ion Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V?

Claims of fast charging a Li-ion Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V in one hour or less usually results in lower charge levels. Such a charger simply eliminates stage two and goes directly into 'ready' once the voltage threshold is reached at the end of stage one. The charge level at this point is about 70%. The topping charge typically takes twice as long as the initial charge.
Depending on the charger and the self discharge of the Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V, a topping charge may be implemented once every 500 hours or 20 days. Typically, the charge kicks in when the open terminal voltage drops to 4.05 volts per cell and turns off when it reaches 4.20V/cell.
No trickle charge is applied because the Li-ion laptop batteries for LENOVO Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V laptop is unable to absorb overcharge. Trickle charge could cause plating of metallic lithium, a condition that makes the cell unstable. Instead, a brief topping charge is applied to compensate for the small amount of self-discharge the Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V and its protective circuit consume.

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Use Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V need pay attention to some matters:

1. Carefulnessly read narrate book of battery,use commendatory battery.
2. Research whether the electric appliance and the Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V contact elements is whether clean, when necessity clean with the wet cloth mop, after dry loads according to the correct polar direction.
3.When non-adult custody, don’t let the child replace the battery, compact battery like AAA should be placed at somewhere the child can't attain.
4.Don't mix up new and old batteries or put different model batteries together.
5. Don't try to make Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V rebirth use of hotting up, charging,or other way.
6. Don't let battery short circuit.
7. Don't hot up or loss it in water.
8. Don't strip battery.
9. Electro-adapter should be cut switch after use.
10.Lenovo ASM 42T4966, FRU 42T4985 ThinkPad 1838 Tablet Battery 7.4V shoud be take off from adapter when it is long time no use .
11.Battery should be stocked in cool and dry places.

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Disclaimer: The batteries supplied by our Company are [replacement for] sold for use with certain products of computer manufacturers, and any reference to products or trademarks of such companies is purely for the purpose of identifying the computer manufacturers with which our products [are replacement for] may be used. Our Company and this Website are neither affiliated with, authorized by, licensed by, distributors for, nor related in any way to these computer manufacturers, nor are the products offered for sale through our Website manufactured by or sold with the authorization of the manufacturers of the computers with which our products [are replacement for] may be used.