Li-ion battery charging while in use

Discussion in 'The Projects Forum' started by Marcus2012, Aug 3, 2015.

  1. Marcus2012

    Thread Starter Member

    Feb 22, 2015
    Hey guys :)

    I'm in need of a 12V Battery Pack for a 7" monitor and I've been looking around and I've seen some cheap ones on eBay of course :). Trouble is I don't know much about battery chargers. I've linked one I've found below which has a range of capacities available but my question is can I use this battery while it is charging? Kind of like how you can plug or un plug a laptop charger and it wouldn't affect its operation? Or would I need to add some addition circuitry to bypass the battery when I plug in 12.6V from the mains?

    Thanks in advance for your time and advice guys xD

    12V 3000mAh Protable Lithium-ion Li-ion Rechargeable Battery + AC Charger 2368
  2. ian field

    Distinguished Member

    Oct 27, 2012
    There are various safety warnings about charging lithium batteries - they can vent with flaming gas if you don't follow the instructions to the letter.

    My DIY E-cig battery uses a shunt regulator adjusted to exactly 4.2V, no problems so far.............
    Marcus2012 likes this.
  3. Marcus2012

    Thread Starter Member

    Feb 22, 2015

    Hey thanks for the reply :)

    Yeah I have read that charging methods for Li-Ion can be more dodgy for the amateur/inexperienced than Ni-Cd, this is the main reason why I wanted to be sure this was ok to use while charging. :)