Will this external battery work to also charge the internal battery on a Lenovo T420s (not just power it)? Thanks in advance!
1157375
The external battery will power your laptop the same way your wall-supplied DC power supply does. Even running on an external battery your laptop will try to recharge it's internal battery if it isn't at 100% To get the best out of an external battery either fully charge your internal battery before switching to your external battery or decrease the threshold at which your laptop will try to charge the internal battery. This will ensure that your system runs on the external battery till it's empty without wasting power recharging the internal battery.
1157376
It will charge the internal battery. If you hook it up when the internal battery is fully charged, it will keep it that way. However, with mine, it failed after the 4 recharge and was totally worthless. I tried to contact the company and they never answered. Amazon couldn't could not, or would not do anything to help me. I would advise that you forget it unless 4 or so charges is worth the price it costs.
1157377
If it will power it, it will charge it. It just comes with a bunch of cable connectors, so it plugs in to your computer power plug port.
1157378
I can't say about your specific model. It seems like it does charge many models. I have a Dell XPS 12 which is a very new model convertible laptop/tablet and it won't charge my computer battery, but it does prevent it from using any battery. The computer thinks it's plugged in.
1157379
I need it to run the computer while I use it. the internal battery goes dead quickly (less than 1 hr) while using unplugged. Need it to power computer in use for 3 hrs using multiple applications.
1962317
According to lenovo: * 6 cell system battery * Battery energy (Watt-hours): 63 Wh * Not compatible with the ThinkPad External Battery Charger (40Y7625) Average Battery Duration - 9.9hour
2056685
Sorry for the late response. it's supposed to be, but it would not charge. I returned it and got the Lenmar brand instead. Apparently, according to Lenmar, you have to update the bios. Which I did. Battery works perfectly.
384108
Hi! I did not try, but its capacity is 6000 mAh, so it should fully charge &lt;= 6000 mAh battery notebook. My notebook has 5200, for example.
2265197
Yes. I was using a T410 with the same 10.8V battery and am now using this larger battery with 11.1V. (T430 is a slightly newer model but it shares most componemts with the T410.)
1323537
Hi StevenI have a Lenovo 440T with a powered USB port, the computer runs the drive fine even when I use the light scribe. The unit also has a port where you could run a power supply to the unit as well. I very happy with the unit.
1159402
No, I am sorry but it does not work with the T420. The computers that it works with are listed in the bullet points.
695084
That's a very specific question, but I can assure you that this brand of batteries is a very very good brand and I have 2 for my 2 lenovo laptops. I strongly suggest this brand since I've tried it.
435660
Yes, it does but you may be a notice that it is not a genuine replacement of the Lenovo battery. I think it might be what the Fashion Industry calls a "knock-off", in the world of batteries. Whether it is allowable is only for Lenovo to know, and anybody to guess.
1970100
I use what I have purchased on my Lenovo T410 laptop. It fit and worked fine for me. I typed in "Battery for Lenovo T-410 laptop" on Amazon during the purchase. Sorry I don't know E420.
2265196
I'm not sure, Don. Did you check if the battery is compatible with your Thinkpad T430? If it says it's compatible, then it should work. Good luck! :)
1991062
Yes, this battery is compatible with T450s series. Basically, T450s is compatible with only two Lenovo batteries: 6-cell (part number 0C52862, this one) and 3-cell (part number 0C52861). Lenovo doesn't make any other batteries. Make sure to buy authentic Lenovo battery, from an authorized Lenovo reseller. T450s (as well as the last few generations of ThinkPads) have a software check built-in. If the battery is not authentic, the computer will not charge/use the battery (if it's made by a 3rd party/generic brand).
477276
Matthew, I'm using this on a T530, so can't respond from personal knowledge. If you look at the link below, however, you'll see that the T420 is listed as compatible with this dock, as well as the T530:http://support.lenovo.com/en_IN/detail.page?&LegacyDocID;=MIGR-4TPJF4Cheers!
2143683
I purchased a second hand T42 on the cheap cheap. The battery only lasts about an hour in mine.
1031511
I use it with an external battery, Lenmar 11000mAh which has a a 5v 2.4A outlet and it works fine to charge.
2108822
The battery I bought from Amazon.com was for my Lenovo R61i laptop and I am totally satisfied with the battery's performance. I'm sorry but I have no idea if my experience can predict how your experience will be.
87444
I have a think pad (IBM) and this battery works just fine, I order it and have no problems since,