Katherine Alicia
Enlightened
I`v just finished a simple Mod to an old 1960`s Pifco flashlight (it`s 100% easily reversible I make sure of that) and I need to check my maths on the Li-ion batts I`m using.
I`m using a pair of 18350`s held together with a Neodymium magnet, and that fits pefectly in the body of the torch. the batts are rated at 900mA and will be driving an LED drop-in running at 150ma.
Obvs I don`t want my cells to drop below 2.5v, so I divided 4v by 3 and get 1.3v, 1.3x2 =2.6v (perfect!) this says to me that I can use a third of the overall power in my batts quite safely before needing to recharge. that equates to 300mA of the total 900mA available.
since I`m drawing 150mA that means I can use it safely for 2 hours before I need a recharge.
Does that sound about right?
Both batts are sync charged and brand new from the same batch.
I`m using a pair of 18350`s held together with a Neodymium magnet, and that fits pefectly in the body of the torch. the batts are rated at 900mA and will be driving an LED drop-in running at 150ma.
Obvs I don`t want my cells to drop below 2.5v, so I divided 4v by 3 and get 1.3v, 1.3x2 =2.6v (perfect!) this says to me that I can use a third of the overall power in my batts quite safely before needing to recharge. that equates to 300mA of the total 900mA available.
since I`m drawing 150mA that means I can use it safely for 2 hours before I need a recharge.
Does that sound about right?
Both batts are sync charged and brand new from the same batch.