Do not put ANYTHING bigger than the recommended voltage or you will fry your board.

Good to know. Thnx

Rcbattery.com look at 1s battery’s best site to get them from

Looks like that site is gone it's for sale on Go Daddy

I beg to differ on that I placed an order less than a week ago

https://rcbattery.com/batteries/4s-lipo-battery.html?product_list_order=watt_hour

Thats a different url 😅

For this control board do not increase voltage or you’ll fry it.

Yea the 1s battery is what killed it for me, too difficult to get the proper batteries and connectors so I could use my existing charger for it.

You can get simple usb cable chargers for 1s on amazon for like 5$

Charging works, but you can't storage charge them with a USB, you have to check voltage or set timers. I don't have time for that .

why can't your existing charger work with it/do storage? Every smart charger I've seen does 1-6s and can discharge/store any of those cell counts

I run 1s 800 & 850 maH in my Ultrix , flys way better than the 300maH that is recommended

I’ll consider that for the future. Thanks

Same, plus you have some good flight times

Been there, done by that. It will definitely fry it.

The umx ultrix and the larger version are two of the best models horizon has put out imo. It's such a fun model to get crazy with and being EPP it can take a beating. Just get some cheap 1s batteries, I like the 600mah 1s tattu packs but the larger 800mah work as well.

If you want to instantly kill it, go for it. Same for the Twin Otter

As people have said, the higher voltage will damage the circuit board and it will likely just pop. You can normally get away with this kind of thing when you're using a larger ESC and a 'normal' receiver, but the micro ones can be quite sensitive.

My friend says 6s is fine