Li-Po battery 3.7V / 850mAh, PCM protection, connector, 2 pins, cable length 150mm. Akyga LP603048

Solar energy management module dedicated to 12 V lead-acid batteries. It can work with solar panels with a voltage of 18 V. DFRobot DFR0580

Kit containing the Panasonic Eneloop BQ-CC55 charger and 4 Panasonic Eneloop Pro R6/AA rechargeable batteries with 2500 mAh capacity. Panasonic K-KJ55HCD40E

Power adapter with ATX computer connector and banana sockets with 3.3 V, 5 V, +12 V and -12 V voltage outputs. Mounting kit. SparkFun KIT-12867

Switch-mode power supply for LED lighting with an output voltage of 12 V and a current of up to 4.2 A, protection class IP20. Akyga AK-L1-050

PRT-10217 - LiPo Charger Basic - Micro-USB

The energy harvesting module based on the LTC3588 chip, which is a complete energy harvesting solution for sources such as piezoelectric, solar or magnetic transducers. SparkFun BOB-09946

LiPo 3.7 V battery charger module with a microUSB socket. DFRobot DFR0667

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 9 V and a maximum output of 2.5 A to 3.5 A. Pololu 4983

The Step-Down D24V3AHV Buck Voltage Regulator module with adjustable output voltage in the range of 4-25V with a wide input voltage range of 4.5-42V and a maximum output current of 300 mA. Pololu 2102

Rechargeable NiMH Battery Pack: 4.8 V, 900 mAh, 4x1 AAA Cells, JR Connector

Battery capacity tester with white LCD display. It can work with lithium and lead-acid batteries

The Step-Up/Step-DownS7V8A Buck Voltage Regulator module with adjustable output voltage in range of 2.5-8V, input voltage range of 2.7-11.8V and a maximum output current of 0.5-1A. Pololu 2118

Battery capacity tester with blue LCD display. It can work with lithium and lead-acid batteries

Rechargeable NiMH Battery Pack: 6.0 V, 2200 mAh, 3+2 AA Cells, JR Connector

5V/1A and 5W power supply with a 5.5 x 2.1 mm plug, suitable for tablets, routers, switches, modems and other devices. Akyga AK-TB-08

Plastic holder for two 18650 battery cell. The handles can be combined with each other to create any configuration

The Step-Up Buck Voltage Regulator module with adjustable output voltage in range of 2.5-9.5V with a input voltage range of 1.5-16V and a maximum output current of 2A. Pololu 791

The Step-Up Buck Voltage Regulator module with adjustable output voltage in range of 4-25V with a input voltage range of 1.5-16V and a maximum output current of 2A. Pololu 799

Universal charger with two charging sockets designed for Li-Ion, LiPo, LiFe, LiHV, Pb and Ni-MH batteries. It has a power of up to 700 W, which allows charging with a current of up to 25 A. It has a built-in power supply. ToolkitRC M6DAC