

🔋 Recharge your tech life — don’t let your favorite devices run out of juice!
The XINLANTECH 503040 is a 600mAh 3.7V rechargeable lithium-ion battery designed as a direct replacement for Cozmo Vector Robot, SkyBell HD WiFi Video Doorbell, Bluetooth headphones, dash cameras, and other compact electronics. Featuring a built-in protection circuit to prevent overdischarge and short circuits, it offers reliable power in a compact 40x30x4.8mm form factor with a 2-pin JST connector, making it an ideal DIY upgrade to extend your device’s lifespan.































| ASIN | B07V22WWRJ |
| Best Sellers Rank | 460 in Car On-Dash Mounted Cameras 57,619 in Mobile Phone Accessories |
| Guaranteed software updates until | unknown |
| Item model number | 503040 Lipo Battery |
| Manufacturer | XINLANTECH |
| Product Dimensions | 4 x 3 x 0.5 cm; 9 g |
W**R
Fits Cozmo as a replacement
Purchased to replace the worn out battery in a Anki Cozmo. Followed the instructions on the web to take the little robot apart and then replaced the old battery with this one by snipping the wires running to the old battery and then soldering them to the wires on the new battery (I removed the connector on the new battery). Reassembled, charged up and Cozmo is back to life :-)
D**N
Replacement BT Headphones Battery
My Bluetooth headphones stopped charging. After carefully dismantling them, found battery had swollen. This was a perfect fit and increased the capacity by 120mAh so they stay charged longer. Had to cut the plug-off and solder leads to circuit board. Have been working for almost a month and charge without any issues. Great product to repair my headphones.
B**S
Just what Vector needed
Was for Vector Robot, fitted and worked well.
A**X
Does the job nicely
Bought to replace/upgrade the battery on an Anki Cozmo, seems to have been successful and he now has a new lease of life!
A**N
Replacement
Nearest size to original but lower capacity. This or nothing
J**B
Great dashcam replacement battery.
Fitted dashcam unit perfectly! In use since purchase and working fine.
J**Y
Not as shown
Battery arrive not as shown, the plug not as shown, and when I had to connect the original plug to it, it refused to charge not buying again wasted money.
M**Y
Only approximately a 503040 - Shorter and thicker than indicated
Beware - This device is 45 x 30 x 4.7mm thick and may not fit if you are using for something other than a Cozmo Rocket SkyBell
J**S
This battery doubles the play time/capacity of the Anki Cozmo robot to about 80 minutes from about 30 minutes max on the original 320 maH battery in the Cozmo robot when it is new. The fit is snug because the battery area has a maximum length in the enclosure of exactly 40 mm. The specific model number of this battery (503040) means the battery is 5.0 mm thick, 30 mm wide, and 40 mm long. The original battery is 503230. Many Anki Cozmo robots were manufactured in 2017, and LiPo batteries of this type often start to fail after about 3 years - especially if they have been used and recharged multiple times. Failure is usually apparent with inability to connect (or stay connected) to WiFi, or sudden shutdown after only several minutes. The beauty of this battery is that it already comes with a ready connector, so you have the option of soldering in a two-wire (+/-) female connector onto the battery connector board (easily obtained from RC supplies stores, ebay or Amazon), or just snipping the wires to fit, feeding them through the circuit board to the correct areas, and soldering them on to the board. There are excellent videos on YouTube that instruct how to do this (for people who don't mind DIY). For $20 you can completely renew and upgrade your Cozmo and not have the wait time of sourcing direct to China through a site such as AliExpress - which may take 1-2 months.
B**.
Bought this for an anki vector, the battery is progressively getting worse with each charge, after about 10-12 full cycles the battery capacity is down to about 44%, had to buy a new battery from a different vendor and replace it. Tested the battery on its own and is accepting about 280mah
S**R
Utiliser pour upgrader un cozmo, cette batterie ne m’a pas fait défaut et offre uns plus grande autonomie au robot. Le logement est un peu juste cependant mais en forçant un peu ça rentre
B**R
Easy to replace old battery with this one-took only a couple minutes. Remove old doorbell by one screw on bottom of doorbell, remove 4 screws on back of doorbell. Take picture of old battery so you get the two wire colors in the right spot. Plug in wired, Slide battery sideways into battery slot-put back and 4 screws in place reinstall on wall using the bottom screw and reset doorbell. Good to go!
S**A
Wurde schnell geliefert, etwas knifflig zu verbauen, aber am ende tut er was er soll. Hält länger als ursprünglich. Immer wieder gern.
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