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#5674387 - 03/29/15 09:04 AM External Power Suppy for the X-Sight Discussion
Shadow357x2 Offline
Woodsman

Registered: 07/07/14
Posts: 227
Loc: 29137
Lets give this a try and see where it goes.
IMO the best battery supply is the ones that the mechanics and home users buy to jump their cars and mowers etc with the usb plug built in. I use the 12 volt side with a home made step down to 6 volts from the 12 volt side. You can make you own if your good with soldering or just buy a 12vdc to 6vdc step down and solder it to you micro usb cable to use it with your X-Sight.
I made mine from scratch using a lm317 2 resistors and perf board. Granted you can step the power down with nothing but a resistor 2w 20ohm but I personally like the lm317 route better as it keeps the voltage steady at 6vdc longer and doesnt give any voltage spikes.
Any and all ideas welcome, I imagine there is something out there already that does this but as I already had all the doo-dads laying around I made my own.

Thoughts and build ideas?

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#5674390 - 03/29/15 09:07 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
Shadow357x2 Offline
Woodsman

Registered: 07/07/14
Posts: 227
Loc: 29137
Here is one cheap and easy option being it is already built only requiring soldering you micro usb cable the the supply power supply

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#5674420 - 03/29/15 09:29 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
kohj1978 Offline
Light Foot

Registered: 03/16/15
Posts: 37
Loc: Vermont
this is what i use, its tiny and you only need to cut a USB cable in half and add this inline, still requires soldering, or the redneck twist and tape, comes ready at 5.1v but you can bump it up if needed, i tried mine at 5.1 and i have no issues, but im running it at 6v now.


http://www.castlecreations.com/products/ccbec.html

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#5674441 - 03/29/15 09:48 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
fr3db3ar Offline
Bird Dog

Registered: 02/08/15
Posts: 283
Loc: Holland, MI
I'm using a standard recharging device for phones and tablets. While I thought I had an issue with it not supporting the night time requirements of the scope it now appears to be working fine. I ran the scope with it yesterday in the field with 30* temps for 4 hours and it used about half of my supply. The sleep function on our scopes doesn't work when using an external power supply.

Mine is a Anker 79AN7902
6400 m/Ah
output 5V=2A max

I have a Anker Astro E4 13000 M/Ah on order

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#5674451 - 03/29/15 09:54 AM Re: External Power Suppy for the X-Sight Discussion [Re: fr3db3ar]
Shadow357x2 Offline
Woodsman

Registered: 07/07/14
Posts: 227
Loc: 29137
Originally Posted By: fr3db3ar
I'm using a standard recharging device for phones and tablets. While I thought I had an issue with it not supporting the night time requirements of the scope it now appears to be working fine. I ran the scope with it yesterday in the field with 30* temps for 4 hours and it used about half of my supply. The sleep function on our scopes doesn't work when using an external power supply.

Mine is a Anker 79AN7902
6400 m/Ah
output 5V=2A max

I have a Anker Astro E4 13000 M/Ah on order



Those are great batteries but I was looking at the 5vdc versus being able to get the full 6vdc like we do with the 4 aa batteries. I havent run mine with 5vdc but I think it would do ok. I just like to keep the voltage as close to 6vdc as possible.
Thats another reason I like the auto jump boxes because the power is there. I havent checked mine since last night yet but it hasnt beeped at me yet indicating low voltage so add about 16 more hrs to the 103 from yesterday.

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#5674467 - 03/29/15 10:12 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
kohj1978 Offline
Light Foot

Registered: 03/16/15
Posts: 37
Loc: Vermont
Shadow, the vdc from a AA will drop as soon as they get a load, so really your closer to 5v after some use. i would assume the lithium may be a little better. like i said in my post i had no issues with the 5.1v but i know that is a steady supply and will not experience not drop with such a small load.

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#5674612 - 03/29/15 12:08 PM Re: External Power Suppy for the X-Sight Discussion [Re: kohj1978]
Shadow357x2 Offline
Woodsman

Registered: 07/07/14
Posts: 227
Loc: 29137
Don't get me wrong I wasn't trying to poo poo your idea at all, I guess I'm just anal retentive and like to keep electronics as close to the voltage as possible.
Just went out and check my cheap wally world supply and still going strong on the 12vdc side and still have 2 bars left. On the usb side I'm not totally convinced "yet" that it is the best option being that there are 2 different circuits inside. Yes I took it apart and looked. Couldn't resist. Its amazing the amount of power they get out of these thing for such Small batteries.
No matter which way we go with this it will still take some solder, shrink wrap and a little time until someone makes the adapter for the micro usb that we need. There may very well be one out there I haven't bothered to look too hard yet.

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#5676067 - 03/30/15 11:58 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
Beaubien Offline
Bird Dog

Registered: 02/18/15
Posts: 473
Loc: In the mountains east of ABQ
I bought a 3400 mAh one at Walmart last night. Had it on for two hours in nv mode and never dropped by even a bar.

Got tired and shut it off. I'll leave it on longer tonight.

I bought bunch of grommets from Oriellys yesterday and couldn't get anything to fit the hole. The USB slot being offset is going to be an issue fo plugging also.

I may try some RTV in a round mold to see if I can make something.


Edited by Beaubien (03/30/15 11:59 AM)
_________________________


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#5676402 - 03/30/15 02:29 PM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
Shadow357x2 Offline
Woodsman

Registered: 07/07/14
Posts: 227
Loc: 29137
Ok after 130 hrs the external finally poo-pooed. Thats not just a static test either, I was using the menus and playing with it (the SCOPE) HA and just basically running it through the mill every chance I had.
I will change over to the usb side after the battery pack recharges and see what we get from it.
Anyone else have any ideas or input ?

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#5676568 - 03/30/15 04:01 PM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
MoShootr Offline
Woodsman

Registered: 01/15/15
Posts: 103
Just because the battery input is 6v, doesn't mean the internals of the device use that input. More likely they're stepped down to what the internals need - probably closer to standard USB voltages/current.

I would be very very careful with building your own circuit for supplying power. It's probably fine, and it will probably work... BUT - I have personally seen such setups work fine for a while, but when used long-term end up frying USB devices (ie: motherboards, etc). True USB spec is a bit dynamic, and automatically adjusts voltage and current supply to match the load the device wants to pull.

For me, I will stick with commercial USB power supplies, purely for this reason. At least until we know more about exactly what power draw the internals need during Power-On and during various operating modes (switching to NV, etc).

I'm keen on suggestions for commercial supplies small enough to mount on a gun, or on the stock. Ideas?
_________________________
"Being Right, and being Reasonable, are not automatically synonymous." - Me

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#5676787 - 03/30/15 07:03 PM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
fr3db3ar Offline
Bird Dog

Registered: 02/08/15
Posts: 283
Loc: Holland, MI
The one I'm using could easily be mounted in a stock ammo pouch. I slip mine in the mesh pocket of my coyote vest.

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#5676807 - 03/30/15 07:14 PM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
hopalong Offline
Pro Tracker

Registered: 12/05/10
Posts: 1411
Loc: manager, drake river ranch (fo...
thoughts on how well this one might work? I like the digital status.

USB External Battery Pack 20000mAh 5V/2.1A (Black Limefuel Lite LP200X) Charger with Flashlight for iPad, Mini, iPhone 6, 6+, 5S, 5C, 5, 4S, Galaxy S5, S4, S3, Note 3, Nexus 4, 5, 7, 10, HTC One, One 2 (M8), Motorola Droid, LG G2, G3, MOTO X, G, E
by Limefuel
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Price: $85.00
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In Stock.
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Size: 20000mAh

15000mAh
$25.99


20000mAh
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High capacity 20,000mAh Lithium-ion battery charges two devices simultaneously. Input: 5V/2A (max), Outputs: 5V/1A and 2.1A (max). Universally compatible.
Auto-on and auto-off preserves battery charge. Digital display indicates exact level of charge. Perfect battery pack for everyday use, travel, camping or hiking, emergencies, commuters and families.
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Package includes: 1 black Limefuel Lite LP200X 20000mAh External battery and one Micro USB Power Cable
15 new from $29.99 6 used from $22.99



Edited by hopalong (03/30/15 07:15 PM)
_________________________


lake fork FISHERMANS COVE MARINA - 903 474 7479 reservations

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#5676812 - 03/30/15 07:17 PM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
hopalong Offline
Pro Tracker

Registered: 12/05/10
Posts: 1411
Loc: manager, drake river ranch (fo...
another reason I like the one I posted is it has a water resistant cover available as well.
_________________________


lake fork FISHERMANS COVE MARINA - 903 474 7479 reservations

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#5682595 - 04/03/15 09:38 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
MoShootr Offline
Woodsman

Registered: 01/15/15
Posts: 103
I like that. Now I just have to stop paying all my other bills piling up, and I can afford to buy it! laugh
_________________________
"Being Right, and being Reasonable, are not automatically synonymous." - Me

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#5683946 - 04/04/15 08:49 AM Re: External Power Suppy for the X-Sight Discussion [Re: Shadow357x2]
hopalong Offline
Pro Tracker

Registered: 12/05/10
Posts: 1411
Loc: manager, drake river ranch (fo...
I have one ordered, will post what kind of duration I get from it.
_________________________


lake fork FISHERMANS COVE MARINA - 903 474 7479 reservations

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