802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom

Perfect! It fit and came with the proper. connection. Charged it right away. Worked like it should.

My replacement Sena 20s EVO battery arrived today and I enjoyed 100% success installing it. The 20s evo install instructions are "scary" but very doable. I used youtube video /watch?v=x311Sux8Ppo The sena 20s evo was NOT designed to have its battery replaced. But just because it wasn't designed to be replaced doesn't mean it can't be done. Install instructions such as the above make it possible. YES this battery is about 1/32" wider and 1/16" longer than OEM. HOWEVER it still "fits" without any heroic efforts. I varied from video in two places. a) I used a loop of duct tape to affix the battery to its case vs using the OEM 2-sided tape. I did this because a loop of tape is way thinner makes up for any extra thickness batter might have. b) I used a piece of scotch tape to pin the cable to the battery side as to keep it out of the way during top circuit board insertion. when I was done my unit turn on all the functions worked. I have only owned this unit for a few hours but I know it accepts a full charge and all the evo functions work. Time will tell how long the battery will last. My old battery was 4 yrs old and didn't last long anymore. The picture with a yellow-sided battery is OEM, the picture with the silver battery is its replacement.

After plugging in my 20S, it just died. No lights, no charging, no power. Suspecting a ruined battery, I opened the unit up with a small allen key. Bought this battery, which arrived in 48 hours, and replaced the old one. No soldering necessary, just plugged the new battery in... Charged her up and VOILA! Worked like a charm... and saved myself a ton of money.

Direct fit and now my Sena is brand new again. Battery would die in an hour now it lasts a good amount like it did when new! I gave this 5 stars cause it did function. Now a two weeks later the battery is completely dead. Didn’t hold a charge and won’t recharge now.

A little time-consuming to put batteries into transmitter for helmet Bluetooth for motorcycle riding. But once in snd charged, they are good!

Battery lasted with continuous mesh and music for about 5 hours,I did turn it off during rest stops from Jersey to Tennessee but was slightly let down. Friend has a newer version of 30k but his lasted about 2 hours longer I'm surprised when comparing the mAh one would think it would be comparable or surpass the discharge rate. It fits, it's functional but know it will come up a little short

They fit perfectly

Seems to have done the trick. One ride under my belt with the new battery and it didn't die 3/4 of the way thru like the old one.

Gostei da capacidade das baterias, substituição de baterias antigas que perderam capacidade de carga

Fits well charged quick works awesome. Would recommend 100%

Der erste Akku war nach ca. 4 Wochen defekt. Innerhalb 2 Tagen nach der Reklamation war der Kaufpreis vom Verkäufer erstattet. Echt top. Habe dann den selben Akku nochmals gekauft. Dieser funktioniert bisher einwandfrei.

Ik heb deze batterij twee keer besteld omdat ze op Amazon wordt aangeboden als een DC 3,7 V 900 mAh 802540 vervangbatterij voor de Sena 20S EVO. Helaas ontving ik beide keren een andere batterij. Op de envelop stond 900 mAh, maar de batterij in de verpakking was duidelijk gemarkeerd als 502540 – 3,7 V – 550 mAh (2.03 Wh). De tweede levering was identiek aan de eerste. De geadverteerde capaciteit komt dus niet overeen met de batterij die ik heb ontvangen. Amazon heeft de retour correct afgehandeld, maar ik raad kopers aan de batterij na ontvangst goed te controleren voordat ze deze installeren.

El producto cumple tal cual con lo indicado en su descripción.