407090 3.7V Lipo Battery 3000mAh 407090 Rechargeable Lithium Polymer Battery Pack with JST PH2.0mm Connector for Electronic Device
$ 10.49
Price: $10.49
(as of Mar 18, 2025 05:40:20 UTC – Details)
3.7v lipo battery features:
* Rechargeable Lithium-ion Battery.
* High capability,Lightweight,Low internal resistance.
* Excellent safety & discharge performance.
Warning:
1. Before use, please check the battery voltage, positive and negative polarity with the original battery, the opposite will lead to equipment damage. The red wire is the positive pole “+”, the black wire is the negative pole “-“. In some products, the original battery does not have a plug or the plug does not match, you can directly cut off the plug welding.
2. Our rechargeable lithium polymer ion battery connectors types are all JST PH2.0mm. Before ordering, please make sure the battery size and connector fit your device.
3. In order not to damage the battery or shorten battery life, high voltage charging and incorrect connecting of the positive and negative pole is prohibited.
[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] – 407090 li-ion battery size: 4 x 70 x 90mm / 0.16″ x 2.75″ x 3.54″(H*W*L), Voltage: 3.7 volts, Maximum Charging Voltage 4.25v; Capacity: 3000mAh; Material: Lithium Polymer. Net weight: 39g.
[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.
Customers say
Customers find the battery reliable and good value for money. They say it works well as a replacement battery for electronic projects, like bluetooth keyboards and earbuds. Many appreciate its charging speed and ease of use. However, some customers have issues with the polarity and fit.
AI-generated from the text of customer reviews
8 reviews for 407090 3.7V Lipo Battery 3000mAh 407090 Rechargeable Lithium Polymer Battery Pack with JST PH2.0mm Connector for Electronic Device
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CJ –
Itâs a battery
This high-capacity LiPo battery offers reliable performance for electronic projects. The 10000mAh capacity provides substantial runtime, while the integrated protection circuitry safeguards against overcharging, over-discharging, and short circuits. The JST PH2.0mm connector is well-secured and compatible with many common development boards and electronic devices.Build quality is solid – the cell is properly encased with good insulation, and the wire gauge is appropriate for the current rating. The voltage stability remains consistent throughout the discharge cycle, which is crucial for sensitive electronics. The battery arrives partially charged, allowing for immediate testing while still maintaining safe storage levels.The form factor is well-suited for many project enclosures, though you’ll want to verify dimensional requirements as it’s substantially sized. The connector pins are properly aligned and make positive contact, though adding a small dab of hot glue for strain relief is recommended for portable applications. Self-discharge rate is minimal during storage.One consideration is the charging time – it requires patience with standard charging rates to maintain cell longevity. While not the most compact 10000mAh option, the protection circuitry and build quality justify the size. For makers and electronics enthusiasts needing reliable portable power, this battery provides a good balance of capacity, safety features, and value.ââââââââââââââââ
JakobHorstman –
Worth It.
The product works great. I even cut the lines to solder them in place of the old one. It holds a charge for a long time. It is a direct replacement, so be sure to check for exact fit. Once you clip it into the harness, you will notice it sits in their tightly with very little movement. If you remove it to charge it, it’ll feel the same way. That is how you know it is of high quality.
Bruce P. Barker –
Good Product – Worked For My Application
I made the dumb move of replacing the battery on my brand-new solar powered radio because the factory battery just wouldn’t hold a charge. Turns out the factory battery wasn’t at fault; it’s the radio itself that’s defective. It apparently continuously discharges the battery, whether you’re using it or not. So… this battery was the perfect replacement and works great. Since the radio is junk, I now have a spare battery. I don’t know what to do with it, but I’m sure I’ll think of something. 🙂
SuperBoppy –
Should work well.
I purchased this battery to replace one I had in a dashcam. However, I was not able to thoroughly test it because the dashcam was not working properly. I found this out only after I purchased the battery.
lannette –
Perfect replacement for extra oculus battery
Fast shipping and packaged well. This battery was easy to install. It was an exact fit for the extra headband battery for my sonâs oculus. It came with some charge but was easy to charge the rest of the way. Seems to be good quality, it has held a good charge so far.
MashTV –
Works on Keychron K4 v1 keyboards but with a modification
Those who are buying this specific battery with the connector to replace bad Keychron K4 batteries, this battery works with a small modification. The pinout on the connector is reversed. You don’t need to cut the wires and modify it. Take a sewing needle and there should be a small tab on the plastic connector holding each of the black and red wire. Lift one of the tabs carefully and it should allow you to pull the wire along with the soldered pinout. Do the same for the opposite wire. Reinsert in opposite slots. Plug into keyboard and should work like new. Taking the pin outs from the plastic connector requires a bit of patience and finesse if you are doing this by hand. The tab that you pull up is really small and hard to see if you can lift it up, but if you have a sewing needle, you can definitely lift it up. it might be easier to place the plastic connector in a mounted vice while you have both hands to lift up the tab and pull the wire.
djjdnap –
Works⦠but pay attention
They work for my application however the pos and neg were reversed. So just make sure itâs oriented the same. I have a de-pinning tool so I just swapped them.
Chris –
Wired incorrectly! Dangerous!
Buyer beware – mine was wired with reverse polarity! Double check the connections before hooking anything up. Canât believe they wired it backwards – that couldâve been bad.