BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer

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Battery Number: NNK40L212900B2

This is a rechargeable battery.

Chemistry of battery: Li-Polymer
Voltage: DC 7.4 V
Capacity: 2900mAh
Color: Black
Warranty: 1 YEAR

Quantity	Rate	Processing time
2+ units	$76.72	24 hours
5+ units	$74.34	24 hours
10+ units	$71.18	24 hours
Quantity: 30+ units Wholesale Price: 68.81 ~ 63.27, Want to buy In bulk? Click Contact us

Product Description

   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.

Compatible Part Numbers:

NETBOOK

NETBOOK BATBJ40L21 Battery

How to Charge the Li-ion BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer?

Claims of fast charging a Li-ion BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer 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 BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer, 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 NETBOOK BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer 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 BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer and its protective circuit consume.

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Use BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer need pay attention to some matters:

1. Carefulnessly read narrate book of battery,use commendatory battery.
2. Research whether the electric appliance and the BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer 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 BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer 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.BATBJ40L21 Replacement Battery 7.4V 2900mAh Li-Polymer 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.

* 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.