Are you after 9V battery charger? These smart charger suits up to 4 x lithium ion 9v size batteries. If you are looking for cost effective way to run your device, Arduino or littlebits or any other electronics that works on 9V then this would be a great charger for those lithium batteries. 

If you don't have compatible batteries then find our

Specifications:

• 12VDC 1500mA Input Voltage from 100-240VAC input ANZ(SAA) approved power supply
• Charge Current: 4 x 100mA
• Charge Voltage: 9V

Features:

• Independent charge circuits x 4 for charging 1-4 lithium ion 9V size batteries
• Individual LED charging indicators
• Short circuit and reverse polarity protection
• Non-rechargeable battery detection
• Defective battery detection

This charger should only be used with lithium ion or lithium ion polymer rechargeable batteries.