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EEMB 3.7V Lipo Battery 630mAh 772435 Lithium Polymer ion Battery Rechargeable with JST Connector Make Sure Device Polarity Matches with Device Before Purchase!!!

  • Based on 1,307 reviews
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Availability: In Stock.
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Arrives Friday, Feb 27
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Size: 772435 (630mAh)


Features

  • BASIC INFOVOLTAGE: 3.7V; Typical capacity: 630mAh, Weight: approximate 15g; Size: 25.5 x 37 x 8mm/1"x1.45"x0.31" (WxLxH)
  • CERTIFICATIONSUN 38.3 compliant and UL certified for cell. More than 400 EEMB batteries are UL certified. Search "MH20555" on UL for all EEMB UL certification information.
  • RELIABLE PERFORMANCENo leaking, excellent cost performance and long cycle life. PCM protection function: over charge, over discharge, over current, short circuit protection.
  • STORAGE & APPLICATIONKeep 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. Store battery in cool and dry place.//SUITABLE for Bluetooth speaker, dash cam, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, GPS, monitoring units, e-books, tracking devices, sleep management equipment, blood oxygen tracking equipment, pulse monitors.

Number of Batteries: 1 Lithium Polymer batteries required. (included)


Brand: EEMB


Battery Cell Composition: Lithium Polymer


Battery Capacity: 630 Milliamp Hours


Recommended Uses For Product: Indoor/Outdoor


Product Dimensions: 1 x 1.46 x 0.31 inches


Item Weight: 0.634 ounces


Item model number: LP772435-PCM


Batteries: 1 Lithium Polymer batteries required. (included)


Is Discontinued By Manufacturer: No


Date First Available: November 25, 2019


Manufacturer: EEMB Co.,Ltd


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If you place your order now, the estimated arrival date for this product is: Friday, Feb 27

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Top Amazon Reviews


  • light weight and reliable
Size: 403048 (500mAh)
I use these to build head lights into head-mounted magnifiers which I use a lot. One of these, a miniature spst switch and one or two 3-4v 150ma cob led’s gives me the extra light I need. These are light weight and have been reliable so far. I charge them with cheap USB lipo chargers which deliver about 350ma. ... show more
Reviewed in the United States on October 25, 2025 by P. Meyer

  • Didn’t Fit My SkyBell Trim Plus, but Arrived Quickly
Size: 702030 (350mAh)
I bought this to use in my SkyBell Trim Plus. It didn't fit the plug- so I'm returning it. But it arrived very quickly, the packaging was well-protected, and I wish I had done more research.
Reviewed in the United States on September 2, 2025 by 850 Amazoner

  • Useful battery, but double-check the polarity!
Size: 112945 (1400mAh)
As noted in the product title, beware of the polarity. For some reason, there are two common wiring conventions. Since I've been using a lot of Adafruit boards lately, I needed it wired for "center negative." I tested it right after it arrived and quickly reversed the polarity. No soldering needed — just a male and female JST cable and some solderless connectors like Wagos. Moral of the story: always check polarity before plugging in a LiPo! Once rewired, it charged and worked perfectly with my dev boards. ... show more
Reviewed in the United States on June 1, 2025 by RichSad

  • Solid little battery pack for small devices
Size: 803048 (1200mAh)
This battery works great for powering speakers and other small wireless gadgets that take a 3.7 V Lipo with a JST connector. It fits neatly into compact builds and holds a reliable 1200 mAh charge through several cycles. The JST pigtail connector felt snug and didn’t wiggle loose even when I was moving things around. Setup was easy as long as you double check the polarity before plugging anything in — the warning in the listing is fair. My only small issue is that the battery doesn’t come with any mounting tape or foam pads, so you’ll need to improvise some cushioning in your enclosure if you want it snug. Other than that it’s performed consistently without swelling or dropouts. Great value if you need a lightweight LiPo pack for DIY projects. I’d give it four stars because of the lack of built‑in mounting aid but otherwise very solid. ... show more
Reviewed in the United States on July 26, 2025 by Steven

  • Worked well for a BEM mini speaker.
Size: 542730 (340mAh)
I bought this to replace the battery in a BEM mini speaker. I did have to remove the connector to solder directly to the board inside but it's been working like new again. I ran the speaker for several hours after a full charge and it still had pretty of juice left. I would buy this again
Reviewed in the United States on July 8, 2025 by A. K.

  • Dead on Arrival
Size: LP852040 (620mAh)
Multimeter reading zero volts across the cell fresh out of the box. Something either shorted or severed connection. Or it died in storage, left uncharged and alone for years in a forgotten corner of some hot warehouse -- it's lifeless corpse delivered to my doorstep for a pittance.
Reviewed in the United States on November 20, 2025 by Zee

  • Sedici Bluetooth battery replacement
Size: 602248 (620mAh)
I replaced the battery on my Sedici Bluetooth helmet. The battery is the same size, but the connector did not work. I had to splice the wires in with butt connectors. So happy to have a bluetooth that last more than 20 minutes.
Reviewed in the United States on July 9, 2025 by Shane Posey

  • CHECK POLARITY, CHECK THAT THE RED CABLE GOES TO THE POSITIVE ON WHATEVER YOU CONNECT IT
Size: 112945 (1400mAh)
CHECK POLARITY, CHECK THAT THE RED CABLE GOES TO THE POSITIVE ON WHATEVER YOU CONNECT IT, IF IT DOESN'T YOU CAN FRY YOUR ELECTRONIC OR BATTERY MAY CATCH FIRE will update after I charge and see how well it holds charge
Reviewed in the United States on September 21, 2025 by xlayn

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