Each Alta X flight requires two 12S batteries, so you'll need a charger like this that can charge two at a time. 

This battery charger is a dual output balancing charger with an integrated power supply. It can charge two Alta X Flight Packs at once in less than two hours (for fully depleted batteries). 

We include all necessary cabling and accessories to allow users to charge two Alta X Flight Packs at once.

Features

• Dual Charging
• Integrated power supply
• Cell balancing
• Storage charge/discharge mode
• Protection against: Overcurrent, overload, under-voltage, short circuit, over-temp, and reverse polarity
• Adjustable charge rate (across voltage inputs)
• Automatic voltage switching (110V-240V) for worldwide use*

Technical Specs:

 

• Input Voltage - AC 110V-240V
• Output voltage: DC 10~72V
• Charging current: 1.0~20.0A ×2
• Charge power max
  • 1100W ×2(@220V AC)
  • 800W x2 (@110V AC)
• Discharge power max - 50W x2
• Discharging current: 0.5~3.0A ×2
• LiPo battery cell count - 2-12S
• Other supported batteries - LiFe, LiHv*
• Abnormal voltage alarm: Yes
• Incorrect cell count setting alarm: Yes
• Working temperature: 0℃~40℃
• Storage temperature: -20℃~60℃
• Upgrade connectivity - Bluetooth / mobile app
• Size - 10.87 x 9.6 x 3.23" (276 × 246 × 82mm)
• Weight - 7.72lbs (3.5kg)

*Connectors/cables not included

 

In The Box

 

• Qty 1 - Dual Channel Charger
• Qty 2 - XT90 Charging Leads
• Qty 2 - Balance Leads for 12S Alta X Batteries
• Qty 2 - Balance connectors for 6S/10S/12S LiPo batteries (not 14S)
• Qty 1 - Power cable