How Long is the Battery Life on the SMH10? Sena January 04, 2017 02:40 Follow A fully charged SMH10 provides 12 Hrs of talk time and 10 Days of standby time. It takes about 2.5 hours to be completely charged. Have more questions? Submit a request 7 Comments Date Votes 0 paul March 27, 2012 17:15 I use my SMH10 sporatically, curse of having two different types of motorcycle, and have been very impressed on the battery life of the unit. I will go for a week without use or charging, then ride for several hours, park again, repeat for a month. No additional charging has been required. I primarily listen to music and navigation from my DroidX smartphone verses using the intercom or actually talking on the phone. 0 Glenn Johnson May 04, 2012 10:21 My brother and I have an annual week-long motorcycle trip. Last year we used the SMH10's and were very happy with the range and the battery life. With over-night charging we were never able to exhaust the battery. Glenn 0 Shannon Williams August 30, 2013 22:02 My husband and I use the SMH10's every time we ride and we've had them on for several hour stretches sometimes. We have yet to run the battery out on them! They've made our riding experience much more enjoyable. We love the fact that we can stay connected and still be able to listen to our own music too! 0 ThreeZeroEight September 30, 2013 15:07 I received a partial shipment (7 batteries) of replacement Sena SMH-10 batteries today. These batteries are equal too, or have a greater mAh capacity of the original SMH-10 battery. In other words, these batteries will operate your SMH-10 as long, or longer, as when it was new. I can sell just the battery (and you do the work) or I can do the work. For those who wish to do the work themselves, no modification to the Sena SMH-10 is required. Li-Po technology is advancing rapidly, the actual physical size of the replacement battery is slightly smaller than the Sena original. Each battery $30.00 plus shipping Complete service $45.00 plus shipping. Only have 7, and don't expect anymore for many weeks, maybe months. First come, first serve. 0 Robert Mike Wunder October 23, 2013 01:51 Like the OP said 12 hours. I ride a GL1800 and have a SM10 and listen to music and talk. Great product and support. 0 Michaelcampbell August 13, 2015 11:20 I use mine regularly and when we do a group ride, it will last 10 hours. 0 Nick January 04, 2017 02:40 You can buy a replacement battery kit from eBay, http://www.ebay.com.au/itm/Sena-SMH10-battery-replacement-kit-fitting-/302161121495?var=&hash=item465a34d0d7:m:mqi1NVRVmb4LfDA7_8junZg It's not from Sena though.... Please sign in to leave a comment.