3.7V 250mAh 402030 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack for DIY 3.7-5V Electronic Product, Bluetooth Headset, Watch 402030 Lithium Polymer Replacement Battery for Bluetooth Earphone, mobile emergency power supply, MP3 ,MP4, GPS tracker and other electronic devices Specifications: * Brand: OXWINOU * Battery Part Number: 402030 * Type: Replacement Li-Polymer Battery * Reachargeable: Yes * Chemistry: Ni-MH * Voltage: 3.7V * Capacity: 250mAh * Size 4×20×30mm(0.157×0.787×1.22inch）(T*W*L). Widely used for Aircraft,speaker,Tachograph Car DVR ,Bluetooth Earphone, mobile emergency power supply, MP3 ,MP4, GPS tracker, remote controllers, smart watch, MID, PDA, pos machines, interphone, voice recorder, leaning machine, backup powers, electric toys and other electronic devices Please replace your old broken battery with branded new OXWINOU rechargeable battery! Noted:Please double check the position of "+, -" before to order this battery. Please mind the direction of ‘ + ’red and ' - ' black wire when install the battery.You could watch YouTube videos for installation instructions.If you think our tools is not convenient to use,you could use your own tools. Features: Reliable Performance—No leak, excellent cost performance and long cycle life. PCM protection function: overcharge, over-discharge, over-current, short circuit protection, over temperature protection.The other advantage of the Lithium Polymer technology is the very low self discharge. For Toys, Lighting and Electric Tools SMP AA5SW Outdoor Motion Light For iRobot Braava 320, iRobot Braava 321, Mint 4200, Mint 4205 77175 6V 1800mAh Flashlight Battery 77375 6V 2600mAh Flashlight Battery 3.6V 1800mAh Ni-CD FL75175 Flashlight Batteries 3.6V 2200mAh Ni-MH FL75375 Flashlight Batteries Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 230 4.4 out of 5 stars 54 4.2 out of 5 stars 11 4.5 out of 5 stars 75 4.5 out of 5 stars 199 4.5 out of 5 stars 469 Price $16.95$16.95 $15.58$15.58 $22.55$22.55 $35.85$35.85 $19.55$19.55 $20.99$20.99 Battery Size AA*5 AA*6 5*Sub c 5*Sub c 3*Sub c 3*Sub c Capacity 1300mAh 2600mAh 1800mAh 2600mAh 1800mAh 2200mAh BT18433/BT28433 Cordless Phone Battery BT184342/BT284342 Cordless Phone Battery BT166342/BT266342 Cordless Phone Battery BT183342/BT283342 Cordless Phone Battery BT1021 Cordless Phone Battery BT446 Cordless Phone Battery Buying Options Add to Cart Buying Options Add to Cart Buying Options Add to Cart Customer Reviews 4.5 out of 5 stars 175 4.4 out of 5 stars 279 4.5 out of 5 stars 259 4.5 out of 5 stars 259 4.5 out of 5 stars 346 4.4 out of 5 stars 123 Price — no data $7.25$7.25 — no data $6.99$6.99 — no data $8.85$8.85 Battery Size AAA*2 AAA*2 AAA*2 AAA*2 AAA*2 AAA*3 Capacity 550mAh 600mAh 600mAh 400mAh 300mAh 800mAh Connector Type EH Plug EH Plug 5264 Plug MSM Plug MSM Plug MSM Plug Rechargeable ✓ ✓ ✓ ✓ ✓ ✓