I'm sure that Eneloop batteries are excellent, but this charger isn't up to the job and this combined package should be avoided. The charger is technologically from the dark ages and I'm surprised that Sanyo will put their name on it.
I don't know where to start with reviewing it:
- it charges batteries only in matching pairs, you can't charge 1 or 3 batteries, or a mixture of AA and AAA
- it is completely dumb and doesn't even try to sense when the batteries are charged, it just carries on over-charging
- there is a 16 hour safety timer, but this (according to the instructions at least) only turns off the LED indicators (I have difficulty believing this, but that is what they say)
You need to consider what this means for your batteries - some batteries will charge in 6 hours, but the charger will continue with the full charge current for a further 10 hours - it is then unclear whether the safety timer will actually shut it down or just turn off the LED.
If you've spent good money on premium batteries, then this isn't the charger you want to be using.