Power
Power for electronics projects: 18650 batteries and holders, TP4056 chargers, buck and boost converters, AC-DC power supplies, inverters and solar panels.
-
12V 10A SMPS Power Supply Metal Casing
Quick Info :
- Input Voltage: 100-120V 60Hz, 220-230V 50Hz
- Output Voltage: 12VDC
- Output Current: 10A (max)
Rs 1,900.00Rs 2,100.0012V 10A SMPS Power Supply Metal Casing
Rs 1,900.00Rs 2,100.00 -
150W DC-DC Step up (Boost) Converter
Quick Info :
- Input voltage: DC 10V-32V.
- Output voltage: DC 12V-35V (adjustable).
- Output current: 10A (MAX).
Rs 890.00150W DC-DC Step up (Boost) Converter
Rs 890.00 -
18650 1S PCB Battery Holder CB-18650-PC2
Quick Info :
- Type: 18650 Battery Holder
- Mounting: PCB Through-hole
- Battery Count: 1
- Application: PCB-based electronics, robotics
Rs 100.00Rs 120.0018650 1S PCB Battery Holder CB-18650-PC2
Rs 100.00Rs 120.00 -
18650 2S PCB Battery Holder BK-18650-PC4
Quick Info :
- Model: BK-18650-PC4
- Cells: 2 × 18650 (2S series)
- Voltage Output: 7.4V nominal
- Mounting: PCB through-hole
- Contacts: Spring-loaded
- Material: Flame-retardant plastic
- Current: Up to 5A continuous
Rs 190.00Rs 220.0018650 2S PCB Battery Holder BK-18650-PC4
Rs 190.00Rs 220.00 -
-
-
18650 Battery Charger Type C 2S/3S 8.4V 2A
Quick Info:
- Input Connector : USB Type-C (5V)
- Output Voltage : 8.4V
- Charging Current : 2A
- Cell Configuration : 2S or 3S (Select Variant)
- Battery Type : 18650 Lithium-Ion
- Protection : Overcharge / Over-discharge / Short Circuit
Price range: Rs 250.00 through Rs 280.0018650 Battery Charger Type C 2S/3S 8.4V 2A
Price range: Rs 250.00 through Rs 280.00 -
18650 Li-ion Battery Holder
Quick Info :
- Battery type: 18650 Lithium-Ion battery
- Color: Black
- Size: 7.6cm x 4cm x 1.9cm (LxWxH)
- 2X screw holes for board mounting
Rs 60.0018650 Li-ion Battery Holder
Rs 60.00 -
18650 Li-ion Battery Holder 2 Way
Quick Info :
- Series : 3.7v x 2 = 7.4v
- Color: Black
- Size: 7.6cm x 4cm x 1.9cm (LxWxH)
- 2X screw holes for board mounting
Rs 100.00Rs 150.0018650 Li-ion Battery Holder 2 Way
Rs 100.00Rs 150.00 -
18650 Li-ion UPS Charger Boost Module 5V/12V
Quick Info:
- Output Variants : 5V 3A / 12V 1.2A
- Output Power : 15W Max
- Battery : 18650 Li-ion (3.7V)
- Function : UPS + Charger + Booster
- Input Voltage : 4.5V – 5.5V
- Protection : Overcharge, Over-discharge, Short Circuit
- UPS Support : Yes
Rs 850.00Rs 900.00 -
18650 Li-ion Vertical Battery Holder
Quick Info :
- Battery Type : 18650 Li-ion
- Configuration : 1×1 / 1×2 / 1×3
- Mount Type : Vertical
- Material : ABS Plastic
Price range: Rs 10.00 through Rs 20.00 -
18650 Lithium Battery Charger 2S AC230V
Quick Info :
- Suitable for: 3.7V lithium rechargeable batteries, including 18650
- Input: AC100-240V
- Output: 4.2V/1A * 2
Rs 690.00Rs 790.0018650 Lithium Battery Charger 2S AC230V
Rs 690.00Rs 790.00 -
24V 20A SMPS Power Supply Metal Casing
Quick Info :
- Input Voltage: 100-120V 60Hz, 220-230V 50Hz
- Output Voltage: 24VDC
- Output Current: 20A (max)
- Dimensions (L X W X H) : 21 cm x 11 cm x 5 cm
Rs 5,750.0024V 20A SMPS Power Supply Metal Casing
Rs 5,750.00 -
2S 18650 Battery Charger with Charge Protection Module
Quick Info :
- Charging Voltage: 8.4V-9V
- Voltage Range: 4.25V-4.35V plus or minus 0.05V
- Voltage Range: 2.3V-3.0V plus or minus 0.05V
- Operating Current: 8A
Price range: Rs 275.00 through Rs 390.00 -
300W 20A Step Down Buck Converter
Quick Info :
- Input Voltage Range : 6V – 40V DC
- Output Voltage Range : 1.2V – 36V DC (adjustable)
- Maximum Output Current : 20A
- Maximum Output Power : 300W
- Conversion Efficiency : Up to 95%
- Ripple : ≤50mV
Rs 1,290.00300W 20A Step Down Buck Converter
Rs 1,290.00 -
32700 6000mAh 3.2V LiFePO4 Battery
Quick Info:
- Nominal Voltage : 3.2V
- Nominal Capacity : 6000mAh
- Cycle Life : ≥2000 Cycles
- Cell Dimensions : 32 x 70mm
- Weight : ~140g
Rs 1,290.00Rs 1,350.0032700 6000mAh 3.2V LiFePO4 Battery
Rs 1,290.00Rs 1,350.00 -
5S 20A Lithium Battery Charging Protection Module
Quick Info :
- Comprehensive BMS protection: overcharge, over-discharge, overcurrent
- Compatible with various Li-ion batteries (18650, 26650, polymer)
- 4.2V charging cutoff with 2.5V discharge protection
- Automatic cell balancing for multi-cell configurations
Rs 1,150.00Rs 1,350.005S 20A Lithium Battery Charging Protection Module
Rs 1,150.00Rs 1,350.00 -
5V 4A Type-C Power Adapter
Quick Info:
- Input Voltage : 100V to 240V AC
- Output Voltage : 5V DC
- Output Current : 4A (Max)
- Output Power : 20W (Max)
- Output Connector : USB Type-C
Rs 1,350.00Rs 1,550.005V 4A Type-C Power Adapter
Rs 1,350.00Rs 1,550.00 -
5V 600MA USB Output charger step up Power Module
Quick Info:
- Input voltage: 0.9V – 5V;
- Output voltage: 5V;
- Output Amps : 600mA
Rs 250.00 -
5V Step-Up Power Module Board 134N3P
Quick Info :
- BAT Discharging Stop Voltage: 2.9V.
- Discharging Efficiency:85%(input 3.7V output 5V/1A).
- Charging and discharging indication.
- Internally installed charging and discharging power MOS.
Rs 180.00Rs 200.005V Step-Up Power Module Board 134N3P
Rs 180.00Rs 200.00 -
600W 25A High Power DC-DC Buck Converter Module 12-75V to 2.5-50V
Quick Info :
- High power 600W rating for demanding applications
- Wide input range: 12-75V with 2.5-50V adjustable output
- High current capability: up to 25A output
- Excellent efficiency: up to 95% for minimal power loss
- Adjustable output voltage for flexible applications
- Durable construction for long-term reliability
- Easy setup and operation with simple controls
Rs 3,100.00Rs 3,300.00600W 25A High Power DC-DC Buck Converter Module 12-75V to 2.5-50V
Rs 3,100.00Rs 3,300.00 -
AA Battery Pair 1.5V
Quick info :
Brand: SUOER
Voltage: 1.5V
Package: 2 x AA BatteriesRs 120.00Rs 180.00AA Battery Pair 1.5V
Rs 120.00Rs 180.00 -
AAA Battery Holder (2/3/4 Way)
Quick Info:
- Cell Type : AAA (1.5V per cell)
- Voltage Output : 3V / 4.5V / 6V
- Wire Leads : Tinned, Red & Black
- Mounting : Screw Holes on Base
Price range: Rs 50.00 through Rs 100.00 -
AAA Battery Pair 1.5V
Quick info :
Brand: SUOER
Voltage: 1.5V
Package: 2 x AAA BatteriesRs 120.00Rs 180.00AAA Battery Pair 1.5V
Rs 120.00Rs 180.00 -
AC-DC 12V 20A SMPS Power Supply Metal Casing
Quick Info :
- Type: Switching Mode Power Supply (SMPS)
- Output: 12V DC, 20A
- Power: 240W
- Casing: Metal
Rs 3,150.00Rs 3,300.00AC-DC 12V 20A SMPS Power Supply Metal Casing
Rs 3,150.00Rs 3,300.00 -
AC-DC 24V 5A SMPS Power Supply Metal Casing
Quick Info :
- Input Voltage: 100-120V 60Hz, 220-230V 50Hz
- Output Voltage: 24VDC
- Output Current: 5A (max)
Rs 2,690.00Rs 2,890.00AC-DC 24V 5A SMPS Power Supply Metal Casing
Rs 2,690.00Rs 2,890.00 -
AC-DC 5V 10A SMPS Power Supply Metal Casing
Quick Info:
- Input Voltage: 100-120V 60Hz, 220-230V 50Hz
- Output Voltage: 5VDC
- Output Current: 10A (max)
- Dimensions (L X W X H) : 13 cm x 9.8 cm x 4 cm
Rs 2,490.00AC-DC 5V 10A SMPS Power Supply Metal Casing
Rs 2,490.00 -
AC-DC 5V 4A SMPS Micro USB Power Adapter
Quick Info :
- Output Connector : Micro USB Type-B
- Input Voltage : AC 100V – 240V
- Input Frequency : 50Hz / 60Hz
- Output Voltage : DC 5V (regulated)
- Output Current : 4A (4000mA)
- Output Power : 20W
- Power Supply Type : SMPS (Switching Mode Power Supply)
Rs 1,350.00Rs 1,590.00AC-DC 5V 4A SMPS Micro USB Power Adapter
Rs 1,350.00Rs 1,590.00 -
AC-DC 5V 5A SMPS Power Supply Metal Casing
Quick Info :
- Input Voltage : AC 100-240V, 50/60Hz
- Output Voltage : 5V DC
- Output Current : 5A (Max)
- Output Power : 25W
- Efficiency : ≥85%
- Ripple & Noise : ≤100mV
Rs 1,290.00Rs 1,390.00AC-DC 5V 5A SMPS Power Supply Metal Casing
Rs 1,290.00Rs 1,390.00 -
AC-DC 9V 2A SMPS Power Adapter
Specifications :
- Input Voltage : AC 100 ~ 240V 50/60 HZ
- Output Voltage: DC 9V
- Output Current: 1A
- Plug Type : UK Plug
Rs 790.00AC-DC 9V 2A SMPS Power Adapter
Rs 790.00 -
AC-DC Power Supply 12V 8A 5V 1A Dual Out
Quick Info:
- Input Voltage : AC 100V – 260V (50/60Hz)
- Output 1 : DC 12V / 8A (96W)
- Output 2 : DC 5V / 1A (5W)
- Total Power : 100W
- Type : Isolated SMPS (switching)
- EMI Filter : Yes (TENTA onboard)
- Heatsink : Dual aluminium passive
- Mounting : 4 × corner holes
Rs 3,350.00Rs 3,800.00AC-DC Power Supply 12V 8A 5V 1A Dual Out
Rs 3,350.00Rs 3,800.00 -
Auto Buck Boost Converter 5-30V to 0.5-30V
Quick Info:
- Input Voltage : DC 5-30V
- Output Voltage : DC 0.5-30V (Adjustable)
- Output Current : 0-4A (Adjustable)
- Output Power : 35W (Up to 60W with Cooling)
Rs 950.00Rs 1,200.00Auto Buck Boost Converter 5-30V to 0.5-30V
Rs 950.00Rs 1,200.00 -
BMS 3S 12V 40A Li-ion Battery DALY
Quick Info:
- Configuration : 3S (12V Nominal)
- Continuous Discharge Current : 40A
- Charging Voltage : 12.6V
- Temperature Protection : 65°C / 75°C (Selectable)
Rs 5,250.00Rs 5,750.00BMS 3S 12V 40A Li-ion Battery DALY
Rs 5,250.00Rs 5,750.00 -
BMS 4S 12V 40A LiFePO4 Battery DALY
Quick Info:
- Brand : DALY
- Cell Config : 4S LiFePO4 (12V nominal)
- Continuous Discharge : 40A
- Peak Discharge : 80A (1 sec)
- Continuous Charge : 40A
- Overcharge Cut-off : 3.65V ± 0.05V per cell
- Over-discharge Cut-off : 2.5V ± 0.05V per cell
- Cell Balancing : Passive (100mA)
- Temperature Protection : Yes (NTC)
- Dimensions : 48 × 74 × 9mm
Rs 5,250.00Rs 5,750.00BMS 4S 12V 40A LiFePO4 Battery DALY
Rs 5,250.00Rs 5,750.00 -
BQ25570 Energy Harvester Boost Charger Board
Quick Info:
- Chip : BQ25570
- Input Voltage : 0.1V to 5.1V
- Output Voltage : 2V to 5.5V
- Function : Boost Charger + Buck Converter
Rs 3,850.00Rs 4,100.00BQ25570 Energy Harvester Boost Charger Board
Rs 3,850.00Rs 4,100.00
![18650 Li-ion UPS Charger Boost Module [5V/12V] in Sri Lanka](https://alphatronic.lk/wp-content/uploads/2026/05/18650-Li-ion-UPS-Charger-Boost-Module-5V_12V-300x300.webp)
![18650 Li-ion UPS Charger Boost Module [5V/12V] in Sri Lanka](https://alphatronic.lk/wp-content/themes/martfury/images/transparent.png)
Everything that feeds a project with the right voltage: rechargeable 18650 and coin-cell batteries, battery holders and TP4056 charger modules, adjustable buck (step-down) and boost (step-up) converters such as the LM2596 and XL6009, SMPS adapters and enclosed power supplies, small inverters and solar panels with charge controllers.
Sizing your power supply
Add up the current of everything in the project (motors and LED strips draw the most) and choose a supply rated comfortably above it. Use a step-down converter to get 5V or 3.3V from a 12V supply or battery pack, and a step-up converter to raise a single 3.7V cell. Browse batteries and chargers, DC-DC converters, AC-DC power supplies, inverters and solar.