So does anyone know where I can get the manual for the EV800D?
The second question is, does anyone know where I can buy a replacement charging lead from (and for those who know what i got and where from, yes I did buy it).
So i managed to pick up an EV800D for a cheapish price. They have no power/charging lead. Does anyone know where I can get a new lead, or if not what the specs of the lead are and how much power is needed to charge the goggles. I know the internal battery is a 2S 1200mAh, so i'm guessing it needs a 9-12V input to charge it.
Originally I was after a Skyzone Cobra SD, but the handful that were in stock at UMT got bought up rather quickly. So lets try a set of EV800D and I intend to do the PRO58 mod on them as outlined in this video, when i get a PRO58 and work out some way to charge the goggles (or parallel a lead out from the goggles Lipo so i can plug one of my 2S 650 into it externally).
Looking at the manual it looks like the goggles can take 11-20V DC input, so you will just need to measure the barrel plug socket outer diameter and inner pin diameter, then either buy or make a barrel plug to XT30 / XT60 cable.
12-Dec-2023, 03:34 PM (This post was last modified: 12-Dec-2023, 04:17 PM by SnowLeopardFPV. Edit Reason: Typo corrections. )
I can see in the web page linked to below that the Eachine EV800D uses a 2.5mm x 1.0mm barrel plug, but those official power adapters are now discontinued...
A 2.5mm x 1.0mm barrel plug doesn't seem to be very common at all. I only found one listing for such an power adapter at the link below which is a Polish supplier, so probably no chance of buying one of those from the UK...
I think you will have to resort to buying any old 12V power adapter that supplies at least 2A, then butcher the plug off the end and solder on your own 2.5mm x 1.0mm barrel plug. Alternatively try to find one of those universal adapters which come with an array of power connector plugs that you can fit to them (assuming one of them is a 2.5mm x 1.0mm barrel plug of course).
Since the battery is a 2S 7.4V, I wonder if I could run an XT30 connector to the underside of the goggles, so I can a) use my b6 charger to charge it and b) plug a secondary battery into it to extend usage times when out in the field. It might be better than messing around with an adapter. Although having access to one would be useful as well.
I actually tried to get on the Eachine website, but the only page that wouldn't load was the one I wanted. :/
What I'm wondering is can I use that lead, which appears to plug in to the balance lead on a 3S battery, with a F to F balance patch lead so i could plug a female 3S balance connector into my SkyRC balance charger and that cable into the other side and charge directly.
So the 3S charging lead looks like this.
So use two of these to make a straight through patch cable.
Then plug one end into the e3 and the other end into the charging lead connector.
to That way i can charge the goggles battery straight from my mains charger. Or is this a bad idea?
IS this unit new and/or not very old? Is the LiPo known good for duration?
You might be spending time and effort to find a charging solution only to then find the unbranded internal LiPo is end of life.
Personally, I'd open it up, and be looking to remove the existing LiPo, and then:-
Put in a decent one, feed it bypassing any internal charge cct and take its balance port out of the case to charge it from.
OR, I'd bring the battery feed wiring out and velcro on an external one on the back of the strap to balance the unit and so you can swap quickly and extend its session life.
I do not have THAT model headset, but have three (of two makes) that were internal modded to external battery.
Two were initially years back my daily drive, now used for the school club, and happily run for ages on larger capacity tired LiPo no longer quad current capable.
Flying buddy was till a couple of months back using a similar headset with an ex-transmitter 8 cell NIMH pack on the rear strap feeding it. Its still his backup. Simple, Reliable.
It's status is unknown. I think it's an ex-display model and when they decided to sell it couldn't find the power leads. I got it mainly to try out the PRO58 diversity mod or if I can find one, use the same mod technique to plumb in a rapidfire module. I don't need any more goggles tbh, but if I can get something that might suit better for LR, then that would be sweet. my current goggles are not suitable for flights beyond maybe a km with LoS. I want to try going a bit further in the new year.
So my first thought was to swap the lipo in it with oneof my 2S 650's, if it will fit. connect the xt30 side to the goggles and expose the balance lead so i can plug it into the balance charger. Second thought was to basically do what your friend did and throw away the internal battery and put an xt30 connector on the outside bottom, then purchase a big 2S Lipo for use with the goggles. Third idea was a hybrid of the first two.
I will check the internal battery first. if it's dead, I might order another one. Downside it seems to come from banggood. Can't find them on Ali.
If you are going to be modding the goggles anyways, why not just get a dual 18650 or 21700 tray and solder it to the power leads. If you have a bunch of lion cells laying around, you can even save yourself the barrel plug/XT30. It probably won't fit inside, but you can just stick it outside and attach a cover or go with a battery strap.
Yes the battery is a 1S, but at 7.4v, but in terms of Lipo power it would be the equivalent to a 2S Lipo, ie, 2x 3.7V. So direct replacement would be a 2S Lipo or 2S Li-ion. If I could I would like an internal battery, but it doesn't have to be massive. Like a 450 would probably do. It would be there for a failover scenario where the main battery died for some reason or ran out of power, so i have time to swap them out.
These goggles will never get used for day to day FPV, for those I have the VR03's. These cater for the more LR end of what i want to do. I want some diversity goggles that can maybe take a decent omni and patch or helical. So i can eventually get my range up a bit.
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