Anker 79AN20L-SA rechargeable battery

Astro Pro2 20000mAh Multi-Voltage External Battery Need to charge more than just your mobile phone? Invest in greater, more versatile power with the Anker Astro Pro2.

A beast of a battery.
When a standard external battery just won’t cut it, reach for the Astro Pro2. Packed with 20000mAh of capacity, this is one portable power pack that’s able to charge most phones 9 times, tablets more than once or a laptop one time.

Hugely versatile.
Choose from between DC 12V / 4A, 16V / 3.5A, 19V / 3A and USB 5V / 2.1A outputs for greater accessibility. The three voltage selections enable this external battery to charge a wide range of laptops – in addition to virtually all USB-charged devices.

Laptop compatibility criteria:
(1) voltage: 12V, 16V or 19V, (2) current: 3.5A or less, and (3) a laptop connector size that fits your power input (see below).

Laptop connector tip sizes (in mm):
6.00 x 4.25 - Sony VAIO
6.25 x 3.00 - Toshiba Satellite A105, M35
5.50 x 2.10 - Toshiba T1900, T1950, T4700 / AcerNote 330T , Acer Aspire 1200
4.75 x 1.70 - ASUS Eee 900, 1000
5.50 x 1.70 - Acer Aspire One AO722 AO725 AOD270
5.50 x 2.50 - ACER Aspire 1600, 5610
4.00 x 1.70 - HP Mini 1000/ 1100 PC Series
5.00 x 3.25 - Samsung NC10, N130, N310
7.40 x 5.00 - HP Pavilion DV6 / HP G60, G61/ HP Compaq CQ60, CQ61 / HP 550 / Dell inspiron 1525, 6000, E1505
7.90 x 5.40 - Lenovo ThinkPad T60, X60, R60