Description
✅ Condition: Brand New – Never used, factory‑tested quality
✅ Grade A Cells – Genuine A‑Grade Li‑Polymer for reliable performance
✅ Built‑in Overcharge / Over‑discharge / Overcurrent / Short Circuit Protection
✅ CE / RoHS / UN38.3 Certified
✅ 90‑Day Warranty from delivery – Longer coverage than major platforms
✅ Ships in 3‑7 days with tracking
🛡️ Shipping Protection Available at Checkout
✅ PayPal Buyer Protection included
⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.
Package content: 2 x batteries (sold as 2pcs/lot)
Battery model: 603759
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 (Grade A cells with built-in PCM protection board)
Dimensions (single): 6 x 37 x 59mm / 0.24 x 1.46 x 2.32 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: Beauty Instrument, Power Bank, LED Digital Display, Small Fan, Bluetooth Speaker, DIY 3.7V Electronic Projects
Power up your portable beauty devices and electronics with this 2‑pack 603759 1500mAh rechargeable Li‑Polymer battery set. Made with genuine Grade A lithium cells, these batteries are perfect for beauty instruments (facial massagers, RF devices, LED masks), power banks (DIY portable chargers), LED digital displays, small fans, Bluetooth speakers, and various DIY 3.7V projects. Each battery delivers factory‑rated 1500mAh capacity with built‑in protection against overcharge, over‑discharge, short circuit, and overcurrent — ensuring safe and reliable operation for sensitive 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 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 indoor and outdoor applications.
Compatibility Note: Fits devices that use 603759 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: 6mm thickness × 37mm width × 59mm length — the slim profile fits easily in beauty instruments and power bank casings. 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 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.
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