Refer first to Lolzertanks actual description of the TK40. 4S2P, which the bigest problem there is stuffing the batteries themselves in wrong to begin with.
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anytime a cell in a series set quits putting out power, AND the load is acting resistive, the power of the other cells is connected to it ( so to speak) so the other cells can push the low cell backwards, just like it is pushing energy into whatever device your using.
so lets Redraw the reality of a series battery connection to stimulate the viewing of this phenomena, which will allow the user to picture the possibilites better.
|--{===]---{===]---{===]---{===]---{===]--|
|------------------------
@--------------------|
this is how we always observe the series connection to @ being say a ican bulb load.
our brain pictures the Load being the one that gets the power of All the batteries going to it.
same thing here, same connection.
+|--{===]---{===]---{===]---{===]---{===]---@---|+ from battery top
now i am going to trick your brain
|--{===]---{===]---@---{===]---{===]--|
|------------------[===}-----------------|
this is the same connection.
confused yet
as you can see the batteries are Each in the same Loop that the load is in. like that Bulb that was Glowing white from power roaring through it.
as long as the battery is part of the power going OUT , then the cells are all slamming the load.
any battery that is no longer putting out any power :-(
can be subjected to the same stuff that the poor Incan bulb is going through .
|--{===]---{===]---
@---{===]---{===]--|
|------------------
[000}------------------|
now you understand?
this doesn't only apply to resistive loads, anytime the load is still drawing on the curcuit, be it a driver, or series leds, or a boom box, or anything that still keeps the flow going, after one cell is fully depleated.
because one cell is no longer putting out power, the voltage on the series set has dropped significantly, so reduced voltage by default reduces some of the current, unless there is current control.
often the battery subjected to reverse charge doesnt nessiarily show any negative charge metered numbers after pulled, the battery that gets nailed, is the one that will read 0V. Sometimes it Will read negative numbers but it doesnt have to ,to have been the one that got nailed. A battery that got reverse charged could also still read a low positive voltage, but it probably wasnt severly reverse charged.
i always wanted to draw that up, so my brain could wrap around it, and now i have.
