Product Name

New Laptop Battery for Uniwill U40 U50Si Series

Techinical Specifications

Voltage: 11.1V 

Capacity: 4400mAh

Cells: 18650*6

Color: Black

Weight: 0.42KGS

Rechargeable: Yes

Cell level: Grade A Cell

Dimension: 205.36*52.60*20.90mm

Package: Individual brown neutral box

Compatible battery codes

U40-3S4400-G1L3, U40-3S4400-C1M1, U40-3S4400-C1H1U40-3S4000-G1B1, U40-3S4400-S1G1, U40-3S4000-S1S1U40-3S4000-S1L2 ,63GU40026-1A

Fits machine models

Uniwill U40 SeriesHasee Q213, Q220, Q450, Q540 SeriesAdvent 1015 1315 5301 5302 5311 5312 5313 5421 5431 SeriesAdvent 5511 5611 5612 5711 5712 6441 6551 6552 6553 SeriesAdvent 6650 6651 9115 9315 9415 K1301 KC500 kc500-p KC550 SeriesUniwill U40Si U50Si U51LI1 F71IL1 SeriesGericom Phantom A4 Superlight Series

Product Advantages

1. 100% OEM compatible

2. Factory directly offer, competitive price

3. Strictly control for quality assurance

4. RMA: 2% made of Chinese Grade A cells

5. One year warranty

Win-hsin Advantages

1. Professional laptop battery manufactory with 7 years experiences

2. Strong R&D department to design new models

3. Good pre-sale and after-sales service

4. Over 17 brands and 400 models for your option

5. Best technical support from our R&D department

Using tips for Uniwill U40 U50Si Series

1. Upon initial use (or after a prolonged storage period) the battery may require two to three

charge/discharge cycles before achieving maximum capacity.

2. If the battery will not be used for a month or longer, it’s recommended that it is removed from the device and stored in a cool, dry, clean place at about a 50% capacity level.

3. Leaving a battery in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant stake of charging up and that will reduce the life cycle of the battery.