AOLIKES 502540 550mAh Battery Replacement for Sena SMH5 FM, SMH5D FM,SPH10H FM Motorcycles Bluetooth Headset, ICP40 25 40P Battery Replacementf for Nextbase 312GW Dash cam

A bit of online searching told me this was the size, voltage, and capacity of battery I needed to replace the old stock battery in my Sena SMH5-FM headset. However, I was hesitant to buy this battery since there were no reviews. It caught my eye because it was less expensive than several other similar batteries that had fairly good reviews. Ultimately, I figured these batteries probably all come from similar factories in China, so I decided to give this one a shot. The battery was delivered in two days and was packaged well. On arrival, the voltage measured 3.94 volts which is normal for a partially charged 3.7 V lithium battery. I disassembled my SMH5 and was happy to see that the batteries were nearly identical in size. I was also happy that the polarity of wires to the plug was the same for both batteries. You will see in the description of this battery and in reviews for other similar batteries that occasionally the polarity of the wires is switched. If you get a battery like that, it's not a big deal. You can switch the wires yourself in a few minutes, but it was nice not having to do that. I secured the battery in my SMH5 using a small piece of double-sided tape and reassembled the SMH5. The entire process took me less than 10 minutes. I gave it a quick test run to make sure it was working, then plugged it in to fully charge. Once it's fully charged, I will take it through a few charge cycles to see how it holds up. If there are any problems, I will update my review. But based on my experience so far, I give it five stars. If you are buying this battery for a Sena SMH5 or SMH5-FM, you will need a size T7 torx (star) screwdriver to open the headset and a small piece of double-sided tape to secure the battery in the headset. There's a good write-up online if you need it.

I was looking for a 3.7v Lithium Ion Battery with the smaller connector and this one worked perfectly. The size is perfect. So far it is working well. I'm not sure of the longevity yet, but based on the performance so far, I would recommend it.

I can not speak to the battery life just yet, however installation was a breeze #1. I Removed the 3 size 7 Torx screws from the Sena SMH5 unit. "Please Note remove the screws over a bowl in the event you drop one like I did lol" #2. Pull the other battery out carefully from the connection on the board and be mindful of the double sided tape on the battery it is sitting flush to the circuit board. #3. Check the polarity of the wires on the old battery and the new one to make sure that they match #4. Install the new battery if the wires match up back onto the circuit board. #5. I used some 3M double sided tape on the battery back to the housing not the circuit board when I placed it back together. #6. Lastly install the 3 size 7 Torx screws back in there place and then power on your Sena Smh5 unit to see if the lighting comes on as it should. Three other things you may want to take note of #1. If you drop the rubber charging cover " like I did " it does slip back into it's place #2. Make sure you do not over charge your new battery like I did my old one, as I had to do all of this because I overcharged the factory battery lol #3. Small hands and fingers will be helpful my large hands and large digits made it trying placing the battery back onto the board, not to proud to say I called my wife over to help with that part lol Best of luck and hope that this helps someone else

This battery fit perfect and works great in my Sena SMH5 headset.

This battery is for my husband's motorcycle helmet for his music. It works great!

Arrived fast. Bit difrent size and I have to trim the case with pocket knife. Worked for me.

Product is great!!. The problem was delivered to wrong address.

perfect fit and connector plus 20% battery capacity for my Sena smh5. Took less than 5 min to replace start to finish.

Llegó en el plazo indicado. Paquete perfecto. Funciona correctamente en intercomunicador para casco Sena SHM05.

Facile à remplacer, identique au modèle d'origine. C'est parfait mon interphone est reparti pour une seconde vie.

Pour mon mes écoouteurs Sena

I wasn’t sure if buying a battery for my Nextbase Dash Cam was worth the risk but I can confirm that, despite being a fiddly fit, it is now back to it’s new state. Care needs to be taken when dismantling the unit, the 4 screws holding the case together are tiny and easily lost (a small magnet helps to keep them safe) and a further 4 tiny screws holding the motherboard in place are also fiddly. Once the board has been lifted free the battery needs to be carefully levered out of the base, it is held in place by double sided foam tape, and needs a little persuasion to release. My battery came with a tiny plug which I removed and I cut out the old battery which was distinctly pot bellied! Leaving a couple of inches attached to the board, soldering directly to the board is very fiddly so I opted to join the new leads to the tails of the old one using heat shrink tubing to cover the joints, in retrospect I could have made the new battery leads a little shorter, space in the case is limited and folding the leads around to fit it back together proved a little more difficult than I thought, shorter leads would have made it simpler. The overall result was a perfectly working Dash Cam back to original condition. Just a finishing note, you will need a very small watchmakers crosspoint screwdriver to remove the tiny screws.

Good for Arduino projects