What are the dimensions of the pack?

Dimensions(±2mm): 112 * 65 *8.8mm / 4.41 * 2.56 * 0.35inch(L*W*H)

is this compatible with rp2040 devices like the pico?

Not 100% sure. I think you can use the battery and run the Pico on a breadboard, if that is what you were thinking. The RP runs off of 3.3Volts, so it is close enough. If you want to be safe you can use a TP4056. They are cheap enough.

Can this battery be safely charged with a TP4056?

Hi, yes, it could be charged by TP4056.

Can I charge it with your charging board?

Hi friend, you can use it can be matched with ESP32 Development Board WIFI Kits for Arduino Nodemcu, you could see the picture 4 on the listing.

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4pcs 3.7V Lithium Rechargeable Battery JST1.25 Connector 2pin, 952540 3.7V 1000mAh Battery with Protection Board and Insulated Rubber Tape Compatible with ESP32 Development Board

4pcs 3.7V Lithium Rechargeable Battery JST1.25 Connector 2pin, 952540 3.7V 1000mAh Battery with Protection Board and Insulated Rubber Tape Compatible with ESP32 Development Board

Product ID: 421498409

Details

Battery capacity
1000 Milliamp
Battery cell composition
Lithium
Brand
MakerFocus
Number of batteries
4 Lithium Ion
Recommended uses for product
Power Tool

⚡3A max discharge current

🔋1000mAh high-capacity power

🛡️Multi-layer protection board

Description

🔋 Power your passion, protect your projects.

ADVANCED SAFETY SHIELD - Overcharge, over-discharge, short circuit, and overcurrent protections keep your devices safe and sound.
RELIABLE 1000 M AH CAPACITY - Power your ESP32 projects longer with a robust 3.7V lithium polymer cell.
OPTIMIZED CHARGING CURRENT - Supports up to 1A charging current for efficient and safe recharging cycles.
READY FOR MAKER INNOVATION - Compatible with ESP32 development boards, ideal for the next-gen DIY tech creators.
COMPACT LIGHTWEIGHT DESIGN - Slim 4.5 x 2.5 x 1 cm size and just 18g—perfect for sleek, portable electronics.

The MakerFocus 4pcs 3.7V 1000mAh lithium polymer batteries come with integrated protection boards to prevent overcharge, over-discharge, short circuits, and overcurrent. Designed for ESP32 development boards, these compact and lightweight batteries deliver reliable power with a max discharge current of 3A and a recommended charging current of 0.2-1A, ensuring safe and efficient performance for your innovative electronics projects.

Specifications

ASIN	B07CXNQ3ZR
Amperage	1.5 Amps
Antenna Location	Power Tool
Battery Capacity	1000 Milliamp Hours
Battery Cell Type	Lithium Polymer
Battery Weight	17.76 Grams
Best Sellers Rank	#77,993 in Toys ( See Top 100 in Toys ) #186 in RC Batteries
Brand	MakerFocus
Customer Reviews	3.0 3.0 out of 5 stars (1)
Item Dimensions	45 x 25 x 10 millimeters
Item Weight	17.96 Grams
Manufacturer	MakerFocus
Model Number	7PVE55471137TGQWO5E
Number of Batteries	4 Lithium Ion batteries required. (included)
Reusability	Rechargeable
UPC	192684018591
Unit Count	4.0 Count
Voltage	3.7 Volts

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