2PCS 494251 1500mAh 3.7V Li-Polymer Rechargeable Battery with Protection Board for GPS Dash Cam LED Lights Makeup Lenses

Description

Package content: 2 x batteries (sold as 2pcs/lot)
Battery model: 494251
Capacity: 1500mAh / 5.55Wh (per battery)
Rated voltage: 3.7V
Charge limit voltage: 4.26V (max)
Discharge cut-off voltage: 2.75V
Battery type: Li-Polymer (with built-in PCM protection board)
Dimensions (single): 4.9 x 42 x 51mm / 0.19 x 1.65 x 2.01 inches
Discharge current: 0.5C (750mA)
Charge current: 0.5C (750mA)
Connection: 2-wire pigtail (Red wire “+” Positive, Black wire “-” Negative) — no connector
Compatible with: GPS Tracker, Dash Cam, LED Lights, Makeup Lenses (LED makeup mirror), Portable Fan, DIY 3.7V Electronic Projects
Power up your compact electronics with this 2‑pack 494251 1500mAh rechargeable Li‑Polymer battery set. Perfect for GPS trackers (portable navigation devices), dash cams (car driving recorders), LED lights (small work lights, decorative lights), makeup lenses (LED illuminated makeup mirrors), and various DIY 3.7V electronic projects. Each battery delivers factory‑rated 1500mAh capacity with built‑in protection against overcharge, over‑discharge, short circuit, and overcurrent — essential safety features for reliable daily use.
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 80% of original capacity and a service life of over 1000 cycles, these batteries offer exceptional long‑term durability. CE, RoHS, and UN38.3 certified for safe transport and use. Operating temperature range: charge 0‑45°C, discharge ‑20 to 60°C — suitable for in‑vehicle dash cams and outdoor GPS devices.
Compatibility Note: Fits devices that use 494251 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: 4.9mm thickness × 42mm width × 51mm length — the ultra‑thin profile is ideal for space‑constrained devices like dash cams and makeup mirrors. Suitable for DIY electronic products with power consumption less than 5.55Wh. Not suitable for high‑power power tools or drones.
Installation Tip: If your original battery has a connector (JST PH‑2P 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 5V USB charger with appropriate charging circuit protection. Store in a cool, dry place when not in use.