The non-replaceable Lithium-Ion battery has reached the end of life most likely.
After reading the specs on the WCO I opted not to buy one for that and many other reasons.
The V2 in a weatherproof case was my go to camera until the Weatherproof V3 came out and I replaced all V2’s with V3’s
For powering these outdoor remote cameras I use “Low Voltage Wiring” and burying the wire from an A.C. power outlet (indoors) power supply to the cameras. Then use a 12 volt to 5 volt micro-USB regulator adapter and install to camera.
The power Supply mounts indoors but the cable to camera can be longer as the 5 volts is regulated at the camera. And Voltage drop due to cable length is not an issue as the regulator will work with as low as 9 volts input.
I have ran over 180 feet of 2 conductor cable to camera with this setup, use low voltage lighting wiring it can be buried, it is weatherproof and UV resistant.
Connect the 12v to 5v micro-USB regulator adapter to cable matching polarity ( +red -black ) along cable where a camera is needed if more than 1 camera just get a 12 volt adapter with more current (Amps) The Adapter regulator is weatherproof except the micro-USB itself but the boot on the V3 takes care of that.
Links below to several power supplies, 1 Amp for 1 camera, 2 Amp for 2 cameras, or 5 amp for 5 cameras,
choose according to your needs. The cable run can have multiple connections for cameras along cable.
12 volt input to 5 volt output micro-USB cable (adapter)
12 volt power supply 1 amp with connector adapter
12 volt power supply 2 amp with connector adapter
12 volt power supply 5 amp with connector adapter
14/2 Low Voltage Landscape Wire - 100 feet
Gardner Bender 25-1W1 Watergard Weatherproof Twist-On Wire Connectors, 22-12 AWG, Small Direct-Buried
This location originally had a V2 in an enclosure, the 12v to 5v adapter has been exposed to rain, snow, and heat of summer for over 3 years. Recently replaced V2 with a V3
Below is an event captured by this camera, note I don’t use IR as I get too many flying bug triggers.
This is a link to my Overly-Engineered Wyze Cam setup…LOL
Battery Backed-Up 14 V3 cams and Internet Communications