45N1112 45N1113 Laptop Battery Replacement for Lenovo ThinkPad T440 T450 T450S T460 X240 X240S X250 X260 A275 Series 45N1111 01AV459 45N1109 45N1773 45N1108 L16M3P71 45N1110 11.4V 24Wh

This battery installed and works perfectly. I was concerned that, since this is branded as a non-OEM battery and I paid less than $50, there might be an issue with the built in battery check on my X250. I have purchased "OEM" batteries in the past that have failed this built in test (and would not work in my laptop); but I had no issue with this battery. The battery life has surprised me so far. I bought my ThinkPad second hand, and the original internal battery only lasted between 20-30 minutes. Plenty of time to swap the rear battery, but not much else. I have removed my rear battery and been using the internal battery for basic web browsing over the the past 1.5 hours, and it still shows 63%. It could be bad calibration at this point, since I have not fully cycled the battery; but even if it died while I typed out this review, I would be happy with 1.5+ hours from the internal battery. One tip: peel the JIAZIJIA brand's sticker off before completing the install. There was a nice little surprise under there on the battery I ordered, and so far, the performance confirms it.

After four years with my T450s, the internal battery of the laptop would only charge to 50% capacity. Because of this, I continuously found myself in situations where the laptop would power off due to low charge. Either that, or I would have to stay connected to a power outlet as long as I was using the laptop. I decided that I would replace both the internal and external batteries of the laptop. I believe Lenovo no longer sells genuine internal batteries so I bought this item as a replacement. Unfortunately I ran into a couple of hiccups with this battery. First the connector at the end of the cable that plugs into the battery port was slightly cracked. It didn't seem cracked enough for me to worry, however it is something that I will keep on the back of my mind if this battery ever ceases to operate. Second, the battery capacity is not 100%. The battery arrived with no charge, and after one full charge tlp shows the capacity to be 97.9%. This is not horrendous but it does make me consider how long this battery will actually last. All in all this battery seems to be a worthwhile replacement. I'm getting around 2 to 3 hours of web browsing use at 30% brightness just from the internal battery (discharging from 80% to 30%). This battery coupled with the 6-cell external battery has renewed the life of my T450s and I'm now able to use the laptop unplugged without any concern. Just in case it helps, here is the output from sudo tlp stat: +++ ThinkPad Battery Status: BAT0 (Main / Internal) /sys/class/power_supply/BAT0/manufacturer = SANYO /sys/class/power_supply/BAT0/model_name = 45N1773 /sys/class/power_supply/BAT0/cycle_count = (not supported) /sys/class/power_supply/BAT0/energy_full_design = 23200 [mWh] /sys/class/power_supply/BAT0/energy_full = 22710 [mWh] /sys/class/power_supply/BAT0/energy_now = 7270 [mWh] /sys/class/power_supply/BAT0/power_now = 27061 [mW] /sys/class/power_supply/BAT0/status = Charging tpacpi-bat.BAT0.startThreshold = 76 [%] tpacpi-bat.BAT0.stopThreshold = 80 [%] tpacpi-bat.BAT0.forceDischarge = 0 Charge = 32.0 [%] Capacity = 97.9 [%]

This battery does good. It will be better than your old wore out battery but not quite as good as the OEM but for the price, its just fine. I am happy with it and saved a lot of money. Only time will tell if it lasts as long as the OEM battery.

I’ve had the battery installed for less than 4 weeks and the capacity is already down to 90% capacity.

Easy to install and did not peel any label off like another buyer suggested. It went in fine, computer accepted it, and I don't have to worry about my internal battery!

This is a great Product. Delivery Was punctual. Do not buy it if you need a new battery. These seem to be mislabeled as new batteries. They seem slightly refurbished, but I wish the quality control was slightly better. Lenovo vantage thinks battery serial number and firmware indicates manufacture in 2014-2015. This product is an excellent deal at 10$ to 15$. It might even be worth even 20$ if your internal battery has completely failed, but it is insulting to have this product sold for 45$. Maybe I received a piece which slipped through QC, but the lenovo vantage software describes the capacity as "from 15.5 Wh to 15.52 Wh" Product description and categorization is misleading and may be an outright lie. This company may be committing outright fraud. I don't know. They need to move their product to the used or refurbished category. This product seems to be a refurbished genuine lenovo battery. Very disappointing. Maybe your results will be different. At this price point, there are other options which are NEW batteries.

Update: Seller sent a brand new replacement for free. They have a 1-year warranty. Now it’s working fine again. In the beginning, it was OK, but after 8 months or so it barely lasts an hour or two if lucky. The designed capacity was 23.2 Wh but now the full charge capacity is 15.34 Wh. The battery was manufactured on 09/20/2016, so it is about 4 years old in 2020.

Very happy to have found this product to get some extra runtime on my laptop. I tried another (less expensive) battery from another seller and my laptop gave a communications error so I returned it. This one is working great. Make sure to discharge first, then charge as described. Tip: The free Lenovo Vantage software will allow you to stop charging before reaching 100% to prolong battery life. Hopefully this was helpful.