Batboard

Can anyone tell me what the difference is between the WPLN4121BR and the WPLN4108BR Impres bank chargers? I'm looking at buying one of the two and I've searched but can't seem to find any difference in the two.

They are the same item. One is just the charger part number. The other is the kit (charger, manual, US 110vAC cord). Now, what should be important to you is the firmware version. Current is v3.40. Version 3.00 was the trouble child for these chargers, even when upgraded with the field programmer. I (and most) stay completely away from the v3.00 units. Anyone else want to weigh in?