37v Li Polymer Batteries 402030 of 2025
Best Choice1
OXWINOUOXWINOU 3.7V 250mAh 402030 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Bluetooth Headset, Watch 2-Pack
Main highlights- This product is suitable for battery replacement of DIY 3.7-5v electronic products, mobile energy storage, power supply, LED light, wireless Bluetooth game headset, outdoor video and audio electronic scale, GPS Watch recorder, e-book, USB Fan tester, dash cam controller, mouse and keyboard.
- Please carefully compare the polarity of the connector before use,the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire.
- It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch1.25mm 2-pin connector module.
- It can prevent overcharge, overdischarge, overcurrent, and short circuit.
- 402030 rechargeable lithium ion polymer battery, nominal voltage 3.7V, capacity 250mAh, power 0.92Wh, size 4×20×30.5mm(0.157×0.787×1.22inch）(T*W*L).
9.8Exceptional
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Value for Money2
HXJNLDCHXJNLDC DC 3.7V 220mah 402030 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Bluetooth Headset, Watch
Main highlights- ★Please carefully compare the polarity of the connector before use,the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire.
- ★It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch1.25mm 2-pin connector module.
- ★If there are any quality issues within one year, please feel free to contact us via email for replacement.
- ★402030 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 220mAh, power 0.81Wh, size 4×20×30.5mm(0.157×0.787×1.22inch）(T*W*L), Weight:5g(0.176oz)，Maximum current:0.2A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit.
- This battery is applicable to electronic products with DIY 3.7-5V less than 0.814Wh 220mAh.（ mobile energy storage, power supply, LED light, wireless Bluetooth game headset, outdoor video and audio electronic scale, GPS Watch recorder, e-book, USB Fan tester, dash cam controller, mouse and keyboard）（★ Not applicable to high-power electric tools and model aircraft）
9.7Exceptional
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3
QimooQimoo 402030 3.7V Lipo Battery 180mAh 402030 Rechargeable Lithium Polymer Battery Pack with JST PH2.0mm Connector for Electronic Device
Main highlights- [Note]- 3.7v lipo battery connector type is JST PH2.0MM !!!! - Please make sure the connector type and battery size match your device before purchase.
- [Connector Specifications]-3.7v battery Connector Type: PH 2.0mm;; Cable Length: 5cm / 2"; Please check the battery polarity before installation, if the connector polarity is not matched with your device, it will damage the device or new battery.
- [Battery Specifications] - 402030 li-ion battery Size:4 x 20 x 32mm / 0.16" x 0.79" x 1.26"(H*W*L), Voltage: 3.7 volts, Maximum Charging Voltage 4.25v; Capacity: 180mAh; Material: Lithium Polymer. Net weight: 7g.
- [Applications]- 3.7v lithiun Polymer battery is suitable for MP3/MP4, Bluetooth wireless headset, GPS, baby monitor, game console, skype, smart watch, surveillance device, POS, car recorder, mobile power, Bluetooth speaker, VR glasses, beauty device, pet tracker, ring visual doorbell, etc.
- Please use the battery correctly: 3.7v lithium batteries can not be used for high-current power devices, such as drones, miniature remote control helicopters, model airplanes, electric toys, etc.
9.5Excellent
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4
AKZYTUEAKZYTUE 3.7V 180mAh 402030 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector
Main highlights- WARNING: The batteries connectors type are all JST PH2.0MM . —THE CONNECTORS ARE NOT UNIVERSAL! ! !— Please make sure that the CONNECTOR TYPE, POLARITY , and BATTERY SIZE match your device before purchasing. —If the POLARITY of the connector DOES NOT MATCH that of your device, it will DAMAGE the device or the new battery.—
- Voltage: 3.7volt; Capacity: 180mAh；Maximum Charge Voltage/Current: 4.25V/90mAh; Material: Lithium Polymer.
- NOTE: The 3.7V 180mAh 402030 Lithium Battery is NON-POWER BATTERY! ! ! It can not be used for power device that require high current such as UAV, mini RC helicopter, Model aircraft , Electric toys, Power tools and other.
- Connector Type: PH2.0mm ;Size: 4 x 20 x 32mm / 0.16" x 0.79" x 1.26"(T*W*L); Cable Length: 5cm / 2" ;Net Weight: 7g.
- Application：Suitable for MP3/MP4, Bluetooth wireless headset,GPS, baby monitor, game boy, skybell ,smart watch,monitoring units, POS machine, dashcam, mobile power, Bluetooth speaker, VR glasses, beauty devices, pet tracker,ring video doorbell etc.
9.4Excellent
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5
KBT KEEP BETTER TECHKBT 3.7V 200mAh Li-Polymer Battery：402030 Rechargeable Lithium-ion Replacement Batteries (2pack)
Main highlights- Wide useage: the battery fit for speakers, e-books, LED lights, sensor lights, Parking Monitor, Car Driving Recorder， portable DVD, radios, toys, bluetooth speaker, dash cam, keyboard, Wi-Fi enabled smart home systems, PDA and digital cameras, notebook computers, sleep management equipment, blood oxygen
- Long life-time: With about 800 times charge and discharge cycles,the battery can work for 1-2 year in normal using. If you don't use the battery often, please running out the battery capacity and full charging the battery once a month.
- Life time warranty: Every battery from us is of guaranteed quality for life-time. If you have any probelms with the product (caused by product itself), please contact with us for replacement or refund any time.
- Certified quality: Each lithium battery pass safety examination before they leave the facotry. They must pass UN38.3 test standards such as low-high temperature test, impact test, over charging, external short circuit, vibration test etc. It will lower down the risk caused by accident to minumum in production, shipping and your using period.
- 402030PL Lithium polymer battery: (Size 30*20*4mm ) 3.7V 200mAh , 2pack 402030 batteries in package. Package comes with JST 1.25, 2.0, 2.54 connectors.
9.3Excellent
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6
Liter energy batteryLiter 3.7V 200mAh 402030 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST 2.0mm Connector
Main highlights- Size:30.5 x 20 x 4mm
- 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.
- Connector Type: 2P JST PH 2.0mm Pitch
- 3.7V; Typical capacity: 200mAh; Keep the cells in 40%-60% charged state during long period storage. We recommend to charge the battery every 3 months after receipt of the battery and maintain the voltage 3.7-4.0V, and store the battery in a cool and dry place.
9.0Excellent
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7
AKZYTUEAKZYTUE 3.7V 40mAh 301020 Lipo battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector
Main highlights- WARNING: The batteries connectors type are all JST PH2.0MM . —THE CONNECTORS ARE NOT UNIVERSAL! ! !— Please make sure that the CONNECTOR TYPE, POLARITY , and BATTERY SIZE match your device before purchasing. —If the POLARITY of the connector DOES NOT MATCH that of your device, it will DAMAGE the device or the new battery.—
- Voltage: 3.7volt; Capacity: 40mAh；Maximum Charge Voltage/Current: 4.25V/20mAh; Material: Lithium Polymer.
- NOTE: The 3.7V 40mAh 301020 Lithium Battery is NON-POWER BATTERY! ! ! It can not be used for power device that require high current such as UAV, mini RC Helicopter,RC small drones， Model aircraft , Electric toys, Power tools and other.
- Connector Type: PH 2.0mm；Size: 3x 10 x 22mm / 0.12" x 0.39" x 0.87"(T*W*L); Cable Length: 5cm / 2"; Net Weight: 2g.
- Application：Suitable for MP3/MP4, Bluetooth wireless headset,GPS, baby monitor, game boy, skybell ,smart watch,monitoring units, POS machine, dashcam, mobile power, Bluetooth speaker, VR glasses, beauty devices, pet tracker,ring video doorbell etc.
8.8Very Good
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8
KBT KEEP BETTER TECHKBT 3.7V 500mAh Li-Polymer Battery: 503035 Lipo Rechargeable Lithium-ion Replacement Batteries with PH 1.25 JST Connector, PH2.0/2.54 JST Connector for Replacement
Main highlights- Wide useage: the battery fit for digital cameras, tablet, home monitor, GPS,toys, Network Box，USB Fan，Tester，air Purifier,controller，bluetooth speaker baby infant monitor, keyboard and mouse etc
- Long life-time: With about 800 times charge and discharge cycles,the battery can work for 1-2 year in normal using. If you don't use the battery often, please running out the battery capacity and full charging the battery once a month.
- Life time warranty: Every battery from us is of guaranteed quality for life-time. If you have any probelms with the product (caused by product itself), please contact with us for replacement or refund any time.
- Certified quality: Each lithium battery pass safety examination before they leave the facotry. They must pass UN38.3 test standards such as low-high temperature test, impact test, over charging, external short circuit, vibration test etc. It will lower down the risk caused by accident to minumum in production, shipping and your using period.
- 503035 Lithium polymer battery: 3.7V 500mAh , batteries comes with PH1.25 2Pin JST connector, PH2.0/2.54 JST Connector for replacement.
8.7Very Good
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9
Liter energy batteryLiter 3.7V 500mAh 402050 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST 2.0mm Connector
Main highlights- Size:50x 20 x 3.65mm
- 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.
- Connector Type: 2P JST PH 2.0mm Pitch
- 3.7V; Typical capacity: 500mAh; Keep the cells in 40%-60% charged state during long period storage. We recommend to charge the battery every 3 months after receipt of the battery and maintain the voltage 3.7-4.0V, and store the battery in a cool and dry place.
8.5Good
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10
YDLYDL 3.7V 600mAh 503040 Lipo battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector
Main highlights- WARNING: The batteries connectors type are all JST PH2.0MM . —THE CONNECTORS ARE NOT UNIVERSAL! ! !— Please make sure that the CONNECTOR TYPE, POLARITY , and BATTERY SIZE match your device before purchasing. —If the POLARITY of the connector DOES NOT MATCH that of your device, it will DAMAGE the device or the new battery.—
- Voltage: 3.7volt; Capacity: 600mAh；Maximum Charge Voltage/Current: 4.25V/300mAh; Material: Lithium Polymer.
- NOTE: The 3.7V 600mAh 503040 Lithium Battery is NON-POWER BATTERY! ! ! It can not be used for power device that require high current such as UAV, Model aircraft , Electric toys, Power tools and other.
- Connector Type: PH2.0mm ; Size: 5 x 30 x40mm / 0.2" x 1.18" x 1.57" (T*W*L); Cable Length: 5cm / 2"; Net Weight: 19g.
- Application：Suitable for MP3/MP4, Bluetooth wireless headset,GPS, baby monitor, game boy, skybell ,smart watch,monitoring units, POS machine, dashcam, mobile power, Bluetooth speaker, VR glasses, beauty devices, pet tracker,ring video doorbell etc.
8.2Good
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