Battery question

[Afterbang]

So I have a fat viper and nsdrc micro servo going into my crawler, both recommend 3s batteries but don't have any listing for seeing on 11.1v. Am I missing something? They both nabbed settings and reading for 8.2, which if I remember correctly, it's a fully charged 2s battery. Did something change and I missed the memo?
Thanks

 

[nightcrawler48]

The Injora website recommends 3S for the Fat Viper, I quote, "3S batteries are highly recommended for optimal performance and smoother low-speed control". There are lots of YouTube videos on the Fat Viper and the MBL32 ESC. Some do comparisons using a 2S battery and then a 3S battery.

If you're asking about the NSDRC R100 micro servo, it is rated for maximum 8.4V, 2S then.

 

[Afterbang]

That was more or less exactly what i was asking. Guess I'll have to find a 3s capable servo. Thanks for the info.

 

[hnoroian]

You can throw 3s to the ESC but make sure you have the BEC setting right before blowing up the servo

 

[Afterbang]

Appreciate that! I will, hopefully I should be able to use the bec to control the servo. I'm hoping that will work, but if I'm wrong, I'd love for somebody to tell me I'm wrong. Otherwise, I guess I'm stuck with 2s?
I'm hoping the bec can run the servo.
My next conundrum is finding a battery.
I'm running and injora lcg carbon frame, with the injora toyota body, and I've only got about 1⅜" for the battery, in the ideal placement(I have a 2s spektrum battery that fits perfect), I can fit a little bit bigger, but I need something small. Any other ideas?

 

[Saltrock]

Hardpark has smaller three s batteries but they are out of stock a lot. Tattu has a good selection and they have been around for a long time.

 

[hnoroian]

HobbyKing has a battery finder by dimensions.

 

[89Industries]

Most esc have a bec with an out put of 5-8.4v

The esc is also what powers you receiver which is likely rated for between 3-10v. The receiver then powers the servo with the same voltage it gets from the esc.

So as long as your servo is NOT direct powered from the battery you will be fine with 3s.

Your possible issue will likely be under powering your servo more than overpowering. The nsdrc micro can handle up to 8.4v and use 2.9amps. most smaller esc have a bec max of 7.4v or less. The guys on here super into the small scale comp stuff likely have recommendations that will do better but the Injora MBL32 that is recommended for your fat viper motor has a 6 or 7.4 v bec with 3a. That is enough to run the nsdrc micro servo no problem but you aren't taking advantage of it's full capability since it can use up to 8.4v. but you might not even be able to notice a difference.