V12, all

The voltage drop in the leads is dependant on the current, therefore if you allow the current to change, the amount of voltage drop will change too. At 30 amps the voltage drop is significant. Also if you speak to Phil he will tell you not to use crocodile clips. This is for good reasons. Croc clips can easily give you a false reading by 0.1v just in the clip itself. Every time you disconnect and reconnect the clips the resistance in the mechanical connection will change giving you different readings again. A cell at 1.18v is pretty good, a cell at 1.08v is ready to be thrown away. Now for sensing wires crocodile clips are fine as there is no current going through the clips, therefore no voltage drop. If you look at the CE chargers, they have sepperate sense wires that run with the main wires, they are there for a reason, they carry no current, therefore no volt drop. But whatever you do, do NOT solder the sense wires to the main wires, you will get voltage drop through the connector as there will be a heavy current running through it.

Chris.