4 ms·

My guess: shipping a lithium ion battery improperly.

• Scoundreller 10y ago
  Naw, lithium ion batteries have a high self-discharge rate. Not a good idea for this kind of project. Since we're talking eWaste, my guess is a bunch of 6V alkaline batteries strung together in an old CRT monitor.
  • jhallenworld 10y ago
    It's a good idea to use primary cells for this case, but did they?
    • Scoundreller 10y ago
      They seem to be vague about the device and its batteries, but they do say they utilized an external battery. With no mode of recharging, why bother with rechargeables?
  • marincounty 10y ago
    Lithium ion batteries have the lowest rates of self-discharge.