Nitecore i4 is a great 4 bay charger for you 18500 and 18650 batteriesat an affordable price.
Check out our full line of chargers!
We also carry the 18650 and 18500 batteries.
Checkout the 18650 goggle battery cases available from Fatshark and FuriousFPV

Product Highlights:

• 4 Bay Charger
• Multiple charging speeds – .375A x 4, .5A x 2, .75A x 2, or 1.5A x 1
• LEDs show the charging status of each cell
• Automatically turns off when charging is complete
• Reverse polarity protection protects if cell is entered in the wrong way

Packaging Contents:

• Nitecore i4 Intellicharger
• Standard USA Power Cable
• User Manual

Additional Features:

• Active Current Distribution (ACD) Technology
• Compatible with 1.2V, 3.7V, 4.2V, 4.35V batteries
• Charging program optimized for IMR batteries
• Automatic current selection based on battery capacity
• Automatic detection of non-rechargeable Lithium batteries
• Terminating threshold for battery voltages and charging current can be set independently for each slot
• Capable of charging four batteries simultaneously
• Automatic adoption between three charging modes (CC, CV, and dV/dt)
• Automatically detects battery power status and displays charging progress
• Automatically stops charging upon charging completion
• Reverse polarity protection and short circuit prevention
• Over-discharged battery recovery
• Overtime charging protection
• Designed for optimal heat dissipation
• Made from fire resistant, flame retardant PC material
• Certified by RoHS, CE, FCC and CEC
• Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.

Specifications:

Input Voltage: AC 100~240V 50/60Hz 0.25A (max) 10W DC 9~12V 1AOutput voltage: 4.35V1% / 4.2V1% / 3.7V1% / 1.48V1%Output current: 1.5A x 1 / 0.75A x 2 / 0.5A x 2 / 0.375A x 4

Compatible with:

Li-ion / IMR / LiFePO4:

10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500,18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650

Ni-MH / NiCd:

AA, AAA, AAAA, C, D
Dimensions: 140mm 94.8mm 37mmWeight: 202g (without batteries and power cord)