I got my Mavic Air with Care Refresh & DJI Select. I have a bunch of 20% discount vouchers which are clearly stated what they can be used for but I also have a £100 voucher/code with no stipulations so I'm trying to figure out what I can use it for?

I'm interested in perhaps one more battery, and a battery charger or two (at £17 they seem worthwhile investments for swift return-to-air but I'm not sure if I can use teh £100 voucher for those? It also expires at end of Feb so don't want to waste it!

Any ideas?

Dear. Could you please provide the image of the £100 voucher/code? We will check and help.
For the details of the DJI Select, you can reference the FAQ via https://store.dji.com/event/select-faq.
Thank you.

Hi, for obviously reasons I won't be posting an image of the code here as someone else could use it!

However the exact wording on it is:
Discount Coupon
£100
2018.1.24 - 2018.2.28
<coupon code>
USE NOW (button)

The 20% vouchers specifically say "Accessories Coupon", "DJI Care Coupon" etc.