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Jul 09, 2016, 01:14 AM
Registered User
Mini-Review

JJRC H31 Waterproof Quadcopter Review



Just received a JJRC H31 from gearbest to review and I'm enjoying it so far, it's advertised as being waterproof and has some pretty good pitch and yaw.

In the video I submerge it in water for about 5 minutes and it worked fine afterwards even though the battery had drained a bit while it was submerged. I won't be submerging it on purpose but I would have no worries flying it in light rain or in a wet environment.

It seems like when you touch down with water that the water tension and weight prevents you from lifting back off. If you lose it in any deep amount of water I think chances are you wouldn't get it back.

Seems to be pretty crash tolerant and held up okay when I bent one of the propellers straight up purposely but I'm going to assume that most people will just have a nicked blade or bent arm and I think it will still fly great in that case.

Battery is 36 x 20 x 8 mm and the thickness and width of the battery bay leave no extra room but I think you could fit a slightly longer battery if you wanted to.


Gearbest.com sent me this unit to review and all opinions in this review are my own and not influenced by them in any way.

I've attached some images below.

Spare batteries available here

Specs
Brand: JJRC
Model: H31
Battery: 400 mAh
Charge Time: 60 Minutes
Flight Time: 5-7 Minutes*
Weight: 76g
Dimensions: 29.00 x 29.00 x 9.00 cm
*I found that flight time was less on average than the advertised 8-10 minutes so I put my actual flight times.

Here are my pros and cons after flying.

Pros
  • Actually waterproof to a degree
  • Reasonably Fast
  • Decently durable (plastic seems more flexible than the stuff they’re usually made of)
Cons
  • Gets blown around by wind since it’s so light. Edit:this isn't as big of a problem in a constant wind, gusty winds where you aren't expecting is a different story
  • Exposed gears susceptible to debris.
  • Highest speed setting very difficult to control
  • Once you hit water there is no recovering without physically getting it yourself.
  • The H31 drops when it hits low battery rather than lowering to ground.

Spare batteries available

Included Items:
1 x JJRC H31
1 x Transmitter
1 x USB Charger
4 x Spare Props
2 x Landing Gear
1 x Screwdriver
1 x Pair of Sunglasses (for some reason)
1 x English + Chinese User Manual

Flight on a windy day

JJRC H31 waterproof quadcopter windy day flight (4 min 31 sec)


Sunglasses Review
Exclusive EPIC JJRC H31 Sunglasses review (1 min 16 sec)
Last edited by QuadcopterPatrol; Oct 14, 2016 at 03:12 AM. Reason: updated link
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Jul 09, 2016, 06:08 AM
Registered User
HAHAHA,LOL the Sunglasses are included? i was wandering WHY they where in the picture,thought it was for size compare..........
Jul 09, 2016, 06:50 AM
Fan of just about anything RC
SoloProFan's Avatar
Quote:
Originally Posted by XiaoYaoYou
HAHAHA,LOL the Sunglasses are included? i was wandering WHY they where in the picture,thought it was for size compare..........

Typical for some JJRC stuff. And rebranded JJRC stuff, like the Eachine E5C, also has the same glasses. Maybe you can wear them and avoid detection by the FAA?
Jul 09, 2016, 08:19 AM
Registered User
Great review!
Got one on the way
Jul 09, 2016, 12:48 PM
Registered User
Quote:
Originally Posted by SoloProFan
Typical for some JJRC stuff. And rebranded JJRC stuff, like the Eachine E5C, also has the same glasses. Maybe you can wear them and avoid detection by the FAA?
I wouldn't be surprised if they manufactured sunglasses in a previous life and are just trying to get rid of their warehouse of them
Jul 09, 2016, 01:24 PM
Registered User
Excellent review -

- I think I'll get one to let my nephews use when were out at the lake....should be a blast....

thanks
sum
Jul 09, 2016, 02:18 PM
Snappy FPV // Flying Fischkopp
snappyhh's Avatar
Which spare lipos fit?
Jul 09, 2016, 02:38 PM
Registered User
Quote:
Originally Posted by snappyhh
Which spare lipos fit?
Right now I'm using spare 380mAh Hubsan X4 107C batteries which fit but I'm holding off on buying more until I find something slightly longer than the stock 36 x 20 x 8 mm batteries for more capacity.
Jul 09, 2016, 03:18 PM
Vox Furry Regem
Lycan Animal's Avatar
Nice review. Can you review the sunglasses too?

Looking forward to mine.
Jul 09, 2016, 08:05 PM
Registered User
Quote:
Originally Posted by Lycan Animal
Nice review. Can you review the sunglasses too?

Looking forward to mine.
I'd be happy to

Exclusive EPIC JJRC H31 Sunglasses review (1 min 16 sec)
Jul 11, 2016, 11:19 AM
Registered User
thanks for the review

found those batteries

this one should fit in without a problem

LP802036 3.7v 500mah 36 length 20 width 8.0 thickness 9.5 weight

and maybe one of those two what do you think ?

LP652438 3.7v 540mah 38 length 24 width 6.5 thickness 10.5 weight
LP752438 3.7v 600mah 38 length 24 width 7.5 thickness 11.5 weight
Jul 11, 2016, 11:32 AM
Quad Erat Demonstrandum
scousethief's Avatar
These look awesome , needs that nose bump removing and an FPV cam putting in its place though.


Grab some of these from the EU store
http://www.gearbest.com/rc-quadcopte...235.html?wid=3

( not my link just copied ) 70-odd pence , i bought 5 for something else
Jul 11, 2016, 02:43 PM
Registered User
Quote:
Originally Posted by scousethief
These look awesome , needs that nose bump removing and an FPV cam putting in its place though.


Grab some of these from the EU store
http://www.gearbest.com/rc-quadcopte...235.html?wid=3

( not my link just copied ) 70-odd pence , i bought 5 for something else
hmm these batteries won't fit 48 x 24 x7
Jul 11, 2016, 04:53 PM
Registered User
Quote:
Originally Posted by scousethief
These look awesome , needs that nose bump removing and an FPV cam putting in its place though.


Grab some of these from the EU store
http://www.gearbest.com/rc-quadcopte...235.html?wid=3

( not my link just copied ) 70-odd pence , i bought 5 for something else
I don't think those will fit in the battery bay, the bay is slightly larger than the stock battery and 21 x 42 x 9 mm is about the max size battery I think you could fit in there and the ones you linked look to be 24mm wide.

Quote:
Originally Posted by GalAbutbul
thanks for the review

found those batteries

this one should fit in without a problem

LP802036 3.7v 500mah 36 length 20 width 8.0 thickness 9.5 weight

and maybe one of those two what do you think ?

LP652438 3.7v 540mah 38 length 24 width 6.5 thickness 10.5 weight
LP752438 3.7v 600mah 38 length 24 width 7.5 thickness 11.5 weight
The LP802036 would definitely fit but the other 2 would be too wide.
Last edited by QuadcopterPatrol; Jul 11, 2016 at 04:58 PM. Reason: changed value
Jul 11, 2016, 06:08 PM
Quad Erat Demonstrandum
scousethief's Avatar
Ahhh, apologies then, they quite nice those batts, a shame.


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