After my first little crash the battery retention failed on one of my batteries, which I did not realize until my second little crash about 90 seconds later. Fortunately, since I am a camera nerd I had my camera bag with me and in one of the pockets I had this cheapo silicone bracelet.
After a little bit of trial and error I found that the simple solution was to stretch the silicone bracelet over the top front of the Spark then underneath the arms and back around the battery. Once in place the battery is extremely secure, even in the event of a crash. The reason this is so important is that if you have a flyaway or some catastrophic crash and your battery ejects the Spark will no longer be able to communicate with the controller, make noise, blink LEDs, etc. so you could end up losing the Spark altogether.

I have used this solution ever since. It does not interfere with the use or performance of the Spark and gives me a little bit of peace of mind.

I help this helps some folks. Happy Flying!

Here's a link to the bracelets on Amazon, but you can find them in the dollar store, Walmart, etc.

That looks easier to install than the battery clip I'm using.  Do you know where you got the band (link if possible)?

Hi, thanks for sharing your awesome idea. Please be careful about using third-party accessories as it may affect the performance of the drone. Thank you for understanding. Have a safe flight ahead!

MccloudSpark Posted at 1-31 12:35
That looks easier to install than the battery clip I'm using.  Do you know where you got the band (link if possible)?

Here's 20 of them for about $8 on Amazon.
https://www.amazon.com/Awpeye-Si ... s=silicone+bracelet

DJI Tony Posted at 1-31 14:35
Hi, thanks for sharing your awesome idea. Please be careful about using third-party accessories as it may affect the performance of the drone. Thank you for understanding. Have a safe flight ahead!

I'd love to have some of those silicone bands/bracelets with a DJI logo on them. Do you guys have any of those?

Atomicodex Posted at 1-31 14:57
Here's 20 of them for about $8 on Amazon.
https://www.amazon.com/Awpeye-Silicone-Bracelets-Rubber-Wristbands/dp/B07FC87K61/ref=sr_1_16?ie=UTF8&qid=1548975342&sr=8-16&keywords=silicone+bracelet

Thanks!  I'll give them a try.

Atomicodex Posted at 1-31 15:01
I'd love to have some of those silicone bands/bracelets with a DJI logo on them. Do you guys have any of those?

Hi, thanks for the prompt reply. Sorry that we're not offering this kind of accessory as of the moment. No worries, I will consider this as a suggestion and forward it to the designated department for consideration. Thank you for continued support.

MccloudSpark Posted at 1-31 15:47
Thanks!  I'll give them a try.

Just curious - what do you stick on the Velcro pads?

Nice D I Y job

Cool! Thanks for sharing!

Atomicodex Posted at 1-31 15:01
I'd love to have some of those silicone bands/bracelets with a DJI logo on them. Do you guys have any of those?

yes god idea I would get one too.

Nice idea I was thinking of using some kind of rubber band too but finally I bought a clip I guess the 2 methods work well.

Very smart idea!

In ideal world, we would not need these as batteries would be secured enough via OEM design.

Very good suggestion, thanks

MccloudSpark Posted at 1-31 17:38
Just curious - what do you stick on the Velcro pads?

I bought little LED button lamps at Besy Buy for night flying. They really help with visibility of the aircraft.

Panther Vision - LED Button Lamps (6-pack) ($9.99)

MccloudSpark Posted at 1-31 12:35
That looks easier to install than the battery clip I'm using.  Do you know where you got the band (link if possible)?

Not only that but it would not damage the skin like the battery clip does.

Atomicodex Posted at 1-31 14:57
Here's 20 of them for about $8 on Amazon.
https://www.amazon.com/Awpeye-Silicone-Bracelets-Rubber-Wristbands/dp/B07FC87K61/ref=sr_1_16?ie=UTF8&qid=1548975342&sr=8-16&keywords=silicone+bracelet

Got my new battery bands today!  Can't wait to try one.
Thanks for sharing the idea

Good idea, I've got a bunch of those laying around.