So at the moment, I'm using a MissileWorks RRC2+ altimeter for my dual deploy rocket. I'm just using a 9V battery for power. I'd like to buy some rechargeable 9V batteries though, since I don't want to re-use them and risk an e-match not firing, and it's going to get expensive to keep buying disposable ones. Are lithium ion rechargeable batteries okay to fly with? I'm thinking of these.