303450 600mAh 3.7V Li-Polymer Rechargeable Battery with Protection Board for DIY Electronics Bluetooth Speaker Dash Cam

Description

Package content: 1 x battery
Battery model: 303450 (ultra-thin prismatic Li-Po cell)
Capacity: 600mAh / 2.22Wh (Typical)
Rated voltage: 3.7V
Charge limit voltage: 4.25V (max)
Discharge cut-off voltage: 2.75V
Standard charge current: 0.5C (300mA)
Max discharge current: 1C (600mA)
Battery type: Li-Polymer (with built-in PCM protection board)
Dimensions: 3.0 x 34 x 50mm / 0.12 x 1.34 x 1.97 inches
Weight: 11.4g
Cycle life: 500 cycles retains ≥85% of original capacity
Connector: 2-wire pigtail (Red wire “+” Positive, Black wire “-” Negative) — no connector
Certifications: CE, RoHS, UN38.3, MSDS
Compatible with: Bluetooth Speaker, Dash Cam, MP3/MP4 Player, GPS Navigator, Smart Wearable, Small LED Light, Voice Recorder, Digital Photo Frame, Electronic Toy, DIY 3.7V Projects
Power up your portable electronics with this ultra-thin 303450 600mAh rechargeable Li-Polymer battery. Perfect for Bluetooth speakers, dash cams (driving recorders), MP3/MP4 players, GPS navigators, smart wearables, small LED lights, and various DIY 3.7V electronic projects. With a thickness of just 3mm, this compact battery is ideal for slim devices where space is at a premium — from pocket-sized audio players to discreet dash cams mounted behind rearview mirrors. Each battery delivers factory-rated 600mAh capacity with built-in protection against overcharge, over-discharge, short circuit, and overcurrent — ensuring safe and reliable operation for your devices.
Manufactured with high-quality Grade A Li-Polymer cells and equipped with integrated PCM protection board. The protection features include overcharge protection (detection 4.26±0.05V), over-discharge protection (detection 2.75±0.1V), overcurrent protection, and short circuit protection. With a cycle life of 500 cycles retaining 85% of original capacity, these batteries offer reliable long-term performance. CE, RoHS, UN38.3, and MSDS certified for safe transport and use. Operating temperature range: charge 0-45°C, discharge -20 to 60°C — suitable for dash cams exposed to vehicle temperature variations and portable devices used in various environments.
Compatibility Note: Fits devices that use 303450 battery model with 2-wire connection. No connector included — red and black wires only, ready for direct soldering. Please verify your device’s original battery model and connection polarity before ordering (red wire = positive “+”, black wire = negative “-“). Battery dimensions: 3mm thickness × 34mm width × 50mm length — measure your battery compartment to ensure proper fit. Suitable for DIY electronic products with power consumption less than 2.22Wh. Not suitable for high-power power tools or drones.
Installation Tip: If your original battery has a connector (JST or similar), carefully cut and solder the plug from your old battery to these wires using heat shrink insulating sleeves to connect same color wires together (red to red, black to black). Always verify polarity before soldering and do not reverse the connection.
Battery Care Tips: Avoid full discharge — recharge when battery level drops below 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3-5 full charge cycles to reach optimal capacity. Always use a compatible 3.7V Li-Po charger (300-600mA recommended). Store in a cool, dry place when not in use.