Jump to content

Battery Not Staying Charged


Recommended Posts

I've read on here some people get 2-5 minutes of juice, mine wont even stay on long enough to perform simple nmap payload. Supposedly these things can get up to 10-15 minutes of juice?

When I first got this bad boy, followed start up video... had blinking blue... then solid blue. Put it in attack mode (magenta solid), plugged into network, ran script, turned off...loot right? Plug into laptop (arming mode), ssh into loot, boom it's in there! Unplug from laptop...charge...solid blue light.

Go to run new nmap scan, attack mode (magenta solid), then turns off before I can even plug into the network. I thought that it might not have been fully charged, so I go to charge it and I get a solid blue light. It was strange to me, so I plugged it into my laptop in arming mode (flashing green), ssh into the shark but quickly turns off. The only way it seems i can use this now is with the power source always connected.

Is mine just a bad batch of sharks? I nave several Hak5 products, love the concept of the shark... but it acted like a one and done. Anybody else got these issues?

***Has latest firmware btw

Link to post
Share on other sites

@SuperSavvyTech you are correct that the battery should last some 10-15 minutes. This can be verified using a simple uptime payload similar to:

while true; do uptime >> /root/loot/uptime.log; sleep 10; done

I'm really sorry your Shark Jack battery isn't performing as expected.

At the factory all Shark Jack devices undergo a burn-in test as part of the QA process whereby the battery is fully cycled before being charged to a level suitable for shipping. In the vast majority of cases this process identifies any underperforming batteries - which are then replaced. While a finite number of charge cycles is inherent in lithium batteries, the issue you are describing indicates wear far too premature. Please contact support at https://shop.hak5.org/pages/support and we will get you sorted in short order.

Link to post
Share on other sites

I have made the observation, that the Shark Jack ist not charged, if the voltage is to high. With a Raspberry Pi Powersupply (USB C 5,1 V; https://www.raspberrypi.org/products/type-c-power-supply/) it is "charged" after 60 seconds (solid blue LED) but it runs only for less then one Minute. With a "normal" USB-Powersupply the charge time is several minutes as expected and it operates over 10 minutes. Firmware is latest 1.1.0.

  • Like 1
Link to post
Share on other sites
On 1/19/2020 at 7:07 AM, RWG said:

I have made the observation, that the Shark Jack ist not charged, if the voltage is to high. With a Raspberry Pi Powersupply (USB C 5,1 V; https://www.raspberrypi.org/products/type-c-power-supply/) it is "charged" after 60 seconds (solid blue LED) but it runs only for less then one Minute. With a "normal" USB-Powersupply the charge time is several minutes as expected and it operates over 10 minutes. Firmware is latest 1.1.0.

The power specifications for the Shark Jack is 2.5W (5V / 500mA). The charger you linked is out of spec and may damage the device.

Link to post
Share on other sites
  • 2 months later...

is there any chance we can get the charge level (eg voltage) programmatically?

I have seen that the BATTERY command is only returning charging/full/discharging by accessing gpio40 and gpio41, any chance that one of the GPIOs is an analogue input which could return the charge level?

Link to post
Share on other sites
  • 4 weeks later...
  • 4 weeks later...

Why? The Shark Jack has its own internal battery - so it's compatible with both POE and the much more common non-powered Ethernet ports.

Is there a specific use case you have that would benefit from POE?

Link to post
Share on other sites
  • 1 month later...
On 6/6/2020 at 6:50 AM, Darren Kitchen said:

Why? The Shark Jack has its own internal battery - so it's compatible with both POE and the much more common non-powered Ethernet ports.

Is there a specific use case you have that would benefit from POE?

I was also thinking PoE would be a good feature to leverage where available. Drop the shark Jack into a PoE enabled port and forget about it. Like a lan turtle but without the need for USB power if you will (I also think PoE would be a great addition to the turtle for the same reason)

Link to post
Share on other sites
  • 2 weeks later...

I have worked in retailing hand held amateur VHF/UHF radios which have LiOn batteries.  I recommend to my customers that they fully charge new radios using the charger that comes with it and until the radio tells you it is charged (as defined in the instruction manual) before first use.  Conversely if someone takes their brand new toy and uses it until the battery dies - the battery (in my experience) may never be quite right.   LiOn batteries (unlike older technology) does not have a "memory" effect.   Therefore discharging LiOn batteries to "Condition it" from time to time is a bad idea and of no real use.

I have the Shark on order and expect to play soon.

Link to post
Share on other sites
  • 1 month later...

I would like to support some of the observations here.  I have just received a shark jack and charged it from a Mac.  It only took 30 seconds or so to go solid blue but also got rather warm.  It did stay charged long enough to run the Nmap scan on my home network but would not do anything else.  Wondering if something was wrong I plugged it back in the Mac, which dropped the port and put a too much current (power?) error on the screen.  The shark jack got very warm.  I plugged the chart jack into a USB two on an old PC and it took about 120 seconds to solid blue and only got slightly warm.  It lasted long enough to update to the blinking LED's and to get the loot off.  So, power it gently.

 

Link to post
Share on other sites
  • 1 month later...

A battery question on the shark jack...

It says not to overcharge the battery. Does the charging circuitry keep charging when the light is solid blue? How about running the device off a USB cable while I am exploring the device; can I leave it plugged into USB for long times while it is in arming mode? Attack mode maybe?

thanks...

Link to post
Share on other sites

I usually leave it powered on using a "charger" that doesn't exceed the limits of the Shark Jack (i.e. not using a USB port on the PC even though it should work well, depends on the type of port of course).

When charging, the Shark Jack is pulling about 0.2A with my setup, then less and less as the charging progresses (just like an old school car battery charger).

When the Shark Jack is still attached to the charger, but not charging (i.e. solid blue LED), it is consuming about 0.00 - 0.01A, i.e. stops charging but still powered on.

I can't say anything about the charging circuitry and any "intelligence" built into that. I'll leave that to Hak5 to answer.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...