Includes:

• MFC12401~Battery
• Smart Lithium-ion charger 120/240 vac 2.0 amp
• OEM Apple Modiifed MagSafe adapter approximately 36” long
• Spec & instruction sheet

Specifications:

• 12 x 3.8 MAhr Li-ion Polymer rechargeable cells.
• 10.5 x 5.25 x 1 inches weight 2.90 lbs (battery alone).
• Anodized machined aluminium case.
• Internal charge and discharge circuitry to protect battery from over charge or discharge.  Auto turn off at 4.3vdc and 3.0vdc per cell.
• LED indicator~tells you how much capacity is left in battery.
• 2.5mm barrel connectors~wired in parallel to charge/power the Mac.
• Approximately 400 Watt hours
• OEM Apple MagSafe Adapter (modified)

Key Features:

• Powers all Apple MacBook Pro, MacBook and MacBook Air all models and generations that require a MagSafe adapter to charge. (A1150, A1226, A1297~both 15 & 17 inch, A1181, A1342~black and white or unibody MacBook and A1237 13 inch, A1370 11 inch MacBook Air models).
• Extends use of computer up to 12 hrs. (depending on model). 
• With approximately 400 Watt hours.
• Recharges in 4 hours.

Compatibility:

• 13, 15 & 17 inch Apple MacBook Pro~model numbers A1150, A1226 and A1297).
• A1342~black, white or unibody MacBook. 
• A1237 13 inch and A1370 11 inch MacBook Air.

Instructions:

1. Make sure the battery is fully charged before use. To do this press the button on the front of the battery to check the power indicator.  5 LEDS indicates full charge.
2. To charge the battery, plug in the AC power block into the A/C Power-in socket on the battery. An LED on the power block will show red to indicate the battery is charging. When the battery is fully charged the LED will turn green.
3. Once the battery is charged unplug the power adapter. Plug the Modified MagSafe adapter cable (included) into the "Power to Mac" socket on the battery and then attach the magnetic end of the cable to you MacBook.
4. With the computers battery and the TWD Pro Battery both fully charged the computers battery indicator (on the Macs tool bar) will show 100% capacity. When this indicator begins to decline, the TWD Pro Battery has been discharged and will need to be recharged again.