50000mah portable laptop charger power bank laptop powerbank

 Stay Connected for Emergency 
Never have Your laptop, cell phone, tablet run out of battery when you take along our long-lasting 50000mAh battery pack(K2).
Multi-use All in One Charge
One 20V/3A, one 12V/2.5A, two 5V/2.1A and two 5V/1A output allow you charge several devices like laptop, tablet, cell phone simultaneously.
The widest compatible Laptop Power Bank
Our K2 maybe the most compatible portable charger for Laptop.11 kinds of connectors are supplied to assure a maximum compatibility with a wide range of popular laptops notebooks. 
It compatibles with below laptops but not limit to:
Laptop connector(Unit:mm):
A:6.0/1.4 FUJITSU- 16V3.36A/16V3.75A/19V3.16A
A:6.0/1.4mm SONY- 16V3.75A/4A,19.5V2.15A/4.7A,19.5V3A/4.1A,19V3.16A
C:5.5/2.5mm ACER- 19V3.42A/4.74A
C:5.5/2.5mm ASUS-19V3.42
C:5.5/2.5mm IBM- 16V3.5A/3.36A,16V4.5A/4.2A
C:5.5/2.5mm DELL - 19V3.5A 
C:5.5/2.5mm HP/COMPAQ-18.5V1.1A/4.9A,19V3.16A/4.74A,HP 19V 3.95A
C:5.5/2.5mm FUJITSU-19V4.22A
C:5.5/2.5mm TOSHIBA19V3.16A,19V3.42A,19V4.74A
C:5.5/2.5mm NEC-19V3.16A/2.64A
E:5.5/1.7mm Acer-19V 2.15A,Aspire one(D270,D257,D250),Aspire one(531h/A110)
F:4.8/1.7mm HP-18.5V 3.5A(HP 500HP530 E300)
H:5.0/1.0mm Samsung - 19V2.1A /4.74A(R458 R480 RV415) 
I:7.4/0.6mm DELL-19.5V3.34A(M2300 D430)
I:7.4/0.6mm HP 18.5V 3.5A
K:7.9/0.9mm IBM-20V3.25A, 20V4.5A
K:7.9/0.9mm LENOVO LTEON 20V 3.25A, 20V4.5A
L:3.0/1.1mm Samsung-19V/2.1A(NP900X1B 530U3B)
H:5.0/1.0mm Samsung-19V2.1A/4.74A(R458 R480 RV415)
O:4.5/3.0mm HP-19.5V3.33A(ENVY14 Pavilion15) 
Tips: 
Low shutdown current for 5V port:70mA
Low shutdown current for 12V port:150mA
Low shutdown current for 20V port:200mA
High shutdown current for 20V port:>5A
Can charge Surface Pro 3(but need buy the cable yourself-DC5.5*2.1mm to surface pro connector)
Cann't charge Surface Pro 4(DC 15V)
Check Whether connector listed above fits for your laptop