Using your cobalt ontario mobile phone in G or Dual Mode drains the battery much quicker than just GSM mode. Somewhere in the manual for your phone will be listed the battery times separately for GSM and 3G. On modern mobile phones, the GSM only life-cycle can be up to 50% more efficient.
Why is this important? If you have a relatively new PC the only problem you will get are error messages relating to the clock on start up. No Lithium mines Ontario big deal. If your PC is older then a low battery could be a nightmare. I had a PC which once every few months refused to boot. Rather than take the PC in for repair or start replacing parts myself the first thing I did was look at the BIOS settings. It was soon obvious that the BIOS settings were corrupt (wrong bus speed). I put a volt meter on the battery and sure enough it was reading 2.2 volts.
LG cellphone batteries may contain the same amount of lithium and last the same amount of minutes but the built of the batteries also depend on the cellphone models that they go well with. If you are looking for information on LG cellphone batteries, then you should also read up on the standby powering issues. Now this is possible by checking as many websites as you can. Information is everywhere so you wouldn't be grabbing straws. But because the information on LG cellphone batteries can be found right and left, you shouldn't be overwhelmed.
Li-ion Batteries last longer and charge quickly. A Li-ion Lithium battery stocks and a quick charger make it possible to work all day with a cordless drill without stopping.
Agitate the water gently, until the light tells you it's done. UV purifiers don't work in murky water, so if that's the only water you have, you'll have to pre-filter it until it's not cloudy. You also need to make sure you don't drop a UV device.
Here's a challenge: For one whole day leave everything containing a battery alone. No driving or riding, no cell phone or computer, completely "battery-bereft". At the end of the day you'll either feel tranquil and centred, at total peace with your surroundings or a nervous wreck, climbing the walls.