i4 Charger (4 slots)
Ultrafast 1500mA Charger. As Simple as Insert, Detect, and Charge.

This charger works with nearly all types of rechargeable batteries. It automatically identifies Li-ion, Ni-MH and Ni-Cd rechargeable batteries to apply the right charging mode (Constant Charge Current (CC), Constant Charge Voltage (CV) and Trickle Charge).
Each microcomputer-controlled charging slot is capable of monitoring and charging batteries independently. Red, yellow and green lights clearly show battery status and charging progress.
How fast does it charge?
Charging duration uses this formula:
Battery Capacity (mAh) / Charger Output Current (mA) = Hours
Advanced Features
CHARGING
SAFETY FEATURES
What's in the box
Ultrafast 1500mA Charger. As Simple as Insert, Detect, and Charge.

This charger works with nearly all types of rechargeable batteries. It automatically identifies Li-ion, Ni-MH and Ni-Cd rechargeable batteries to apply the right charging mode (Constant Charge Current (CC), Constant Charge Voltage (CV) and Trickle Charge).
Each microcomputer-controlled charging slot is capable of monitoring and charging batteries independently. Red, yellow and green lights clearly show battery status and charging progress.
How fast does it charge?
Battery Type (Capacity) | One at a time 1500mA |
Two at a time 750mA |
Four at a time 375mA |
18650 (3500mAh) | 2hr 20min | 4hr 36min | 9hr 20min |
18650 (2600mAh) | 1hr 44min | 3hr 28min | 6hr 56min |
RCR123 (650mAh) | 1hr 18min | 1hr 44min | |
Eneloop AA (2000mAh) | 1hr 20min | 2hr 40min | 5hr 20min |
Eneloop AAA (800mAh) | 1hr 36min | 2hr 8min |
Charging duration uses this formula:
Battery Capacity (mAh) / Charger Output Current (mA) = Hours
Advanced Features
CHARGING
- Automatic and manual charging program selection
- Active Current Distribution (ACD) system: Detects and distributes available power to optimize charging in both bays
- Charging program optimized for IMR batteries
- Two independent charging bays: Separate spring-loaded sliders accept different battery sizes and ensures a secure connection
- Automatic current selection based on battery capacity
- Automatically detects battery power status and displays charging progress
- IMR lithium-ion battery activation: Activates fully depleted lithium-ion batteries with protective circuit
- IMR battery recovery
SAFETY FEATURES
- Automatic detection of non-rechargeable lithium batteries
- Automatically stops charging upon charging completion to prevent battery overcharging
- Reverse polarity protection prevents damage to battery if installed incorrectly
- Short circuit prevention
- Overtime charging protection: Stops charging after 10 hours to prevent damage to battery due to excessive heat
- Certified by RoHS, CE, FCC, and CEC
- Made from fire retardant and flame resistant polycarbonate
- Engineered with heat-dissipating fins to help maintain low charger temperature
What's in the box
- i4 Charger (2016 Edition)
- 3 pin UK plug and cable
- Instruction sheet
Input voltage | AC 100~240V 50/60Hz 0.25A(max) 10W DC 9~12V 1A |
Output voltage | 4.35V±1%/4.2V±1%/ 3.7V±1%/1.48V±1% 1.5A ×1 / 0.75A×2 / 0.5A×2 / 0.375A ×4 |
Output current | 1500mA |
Length | 138mm |
Width | 95mm |
Height | 36mm |
Weight | 184g (without batteries and power cord) |
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, 22500, 22650, 25500, 26500, 26650 |
Ni-MH / Ni-Cd: AA, AAA, AAAA, C, D |
"The new second edition of the i4 Intellicharger from Sysmax appears to live up to the initial promise of this model. It successfully charged all manner of cells that I threw at it, with performance generally consistent with its specifications."
Read full review...
by Selfbuilt (CPF)
"This charger uses a CC/CV charging profile, this is the recommended way to charge LiIon batteries. The charge current is a good compromise for handling many battery sizes with only one current setting. I will call it a good universal charger."
Read full review...
by HKJ (CPF)
Read full review...
by Selfbuilt (CPF)
"This charger uses a CC/CV charging profile, this is the recommended way to charge LiIon batteries. The charge current is a good compromise for handling many battery sizes with only one current setting. I will call it a good universal charger."
Read full review...
by HKJ (CPF)
What happens after payment?
When will I receive my lights?
Returns and warranty
User manual
- You will receive a purchase receipt through Paypal after payment.
- Your order will be processed within the next working day and we will email you a tracking code once your package has been shipped.
When will I receive my lights?
- Deliveries in Singapore will take up to 4-6 working days by courier.
Returns and warranty
- If our lights don't work the way they should, let us know and we'll do our best to get you sorted. 1-year replacement warranty.
User manual

We believe in this product so strongly that we're giving you a 60 days money back guarantee! If for whatever reason you are unsatisfied with your purchase, ship the entire package back to us with your Order #number and we'll give you a full refund!