Battery Project for Bike Alarm

[Outback in Idaho]

  Bought a inexpensive motion detector bike alarm that surprisingly works well. Had lots of good ratings, and seen in reviews and recommendations. And the alarm is much louder than a Galeo GPS Tracker. The issue is the motion alarm uses three AA batteries. The plastic used is cheap smurf. And there's this teeny smurf screw in the bottom to hold the cover on. Once the screw is opening it is a real pain in the smurf to open it - and fear of breaking the stupid cover.

  Leave t the Chinese to do stuff half-smurfed! No rechargeable battery pack. Can use rechargeable batteries though. So, I want to out in three rechargeable batteries, maybe a female USB female sticking out to recharge with a male USB cord.
  Seems simple. Not exactly sure how to do this more proper. I do have a couple of USB cabled that have LEDs in them that were use for much larger battery packs, and was considering using them with this idea. Maybe they have circuitry built in already?
  If not, is there a way to recharge the rechargeable batteries, that would be soldered together with wire.

  Used to tinker with this stuff as a kid, but was never taught how to actually build a power supply or alter one. Space is limited to a degree. Would solder a USB cable in there but don't want a meltdown or start a fire either.

  Any ideas? Suggestions?

[SteveC]

 I would  just use a ziptie to hold the cover in place.   

[Grant Lamontagne]

Is this for the trike?

I wonder if it is possible (easier maybe?) to solder the leads from.a cheap solar panel to it for a continuous charge?

I'm useless when it comes to electronics, so I could be way out there.  Feel free to make fun of me if that is a dumb idea!   

Def

[ezdog]

Is this for the trike?

I wonder if it is possible (easier maybe?) to solder the leads from.a cheap solar panel to it for a continuous charge?

I'm useless when it comes to electronics, so I could be way out there.  Feel free to make fun of me if that is a dumb idea!   

Def

This is what I would try to focus on too for sure.
Also you can camo the alarm somewhat by it being covered mostly by the Solar Panel and it would just look like a Solar Device for the bike to most people I would think.

Either way I wouldn't try for a USB connection for anything outside and instead I would use something more simple to mount and more rugged and impervious to water getting in there.

Just about any other connector would be better and easier than USB for my time trying to make this work.

But the real issue it seems to me is that if this thing goes into alarm cant it be defeated in one second with a hammer or just ripping it off the bike and stomping on it or something like that?

I would try to both Camo it somehow and/or hiding in the bike somehow to make it tough to disable once detected.

Thieves be crazy for sure!

[Aloha]

If I recall you had solar panels for recharging batteries?  I'm sure there is a way to DIY something as mentioned to have continuous power  .  That said a hammer strike to the unit would end the alarm quickly so I'd go with this as recommended by Lock Pick Lawyer a few years ago.  Pretty stout and would need an angle grinder to cut.   
Kryptonite Evolution Mini Integrated 10mm Chain Bicycle Lock

[Outback in Idaho]

  Wsdcam 113dB Anti-Theft Bicycle Alarm, Vibration, Motion Sensor, Waterproof

  It is mounted on a headrest post. Visible to a degree, loud, and mounted with stainless steel zip ties. Sure, if someone was to bash the box and toss it it is no great loss, but it will make a lot of noise in the process. And my trike doesn't get locked up in dark allies or anything. Do have a hefty chain to lock frame, through a wheel, onto something.

 

  Also have a Galeo GPS Tracker on the trike as well, and it does have its own rechargeable battery. Connects via Bluetooth & Cellular. Tracks via Bluetooth, cellular, and GPS. Has a lot of functions, and an alarm if you want that turned on. The idea is for the cheap alarm to get the attention and leave the GPS tracker alarm off. So if one got close to the GPS tracker they could enable the alarm via the app and get an audible location. Am pushing for that to be enabled via cellular too, not just Bluetooth.

  The Galeo Group's website: https://findgaleo.com/

  Has lots of settings. These are two of them in brief:
   

  Its alarm does trigger my Apple Watch whether the Galeo app is running or not. Perk?
 
 
  And their plan for me was $20 a year, which is great. Most trackers make extra income off your monthly subscription which made them undesirable unless you was rich.


  As for the cheap alarm, it runs off 3 AA batteries. Am surprised the rechargeable batteries I installed have not worn down much. Might be worth sticking alkaline batteries in there. Cheaply mounted, and Wsdcam included some rather cheap zip ties. Guess they know the alarm is going to get eliminated one way or another. This thing works, but it was not well thought out.
  Alternatively it could be mounted under the rear rack wished would be much harder to remove if it had a bolt on option. One might have to drill some holes in the case, use washers and some silicone. Still, if there was a port of some sort that can recharge the batteries inside, or a rechargeable battery was already inside, that would be more beneficial to the consumer. The case does not come off easily, and thing enough that it could crack in the process. That is their downfall, especially since China makes that stuff dirt cheap anyhow.

  My inquiry was a way to put in three rechargeable batteries and charge them from a user installed system, which seems more complicated. Or find a battery pack that can fit inside with a pair of wires to power the device, and another set to recharge the battery.

  Hoping those key words I put in the Amazon review will get picked up by some company that could design a better product. One cannot put too much into a cheap product in order to keep it cheap. At $18 people will more than likely buy another without worrying about the cost. Gave them 4 stars, was going to give three stars but the product does work despite it being cheaply crafted.


Edit: Corrected some spelling and grammar. I blame the virus.

[Outback in Idaho]

  The case is toot thin and does not flex well, so figure it is going to crack at some point.

  Since I advertised the Galeo, what sort of donation or fee do you require? I personally think the GPS Tracker is a viable option for cyclists of any type.

  As for the cheap alarm, they have no competition, only more clones that are as bad or worse. Why make a clone unless you was going to enhance it to be a better clone?