The Sanyo Eneloop Mobile Booster KBC-L2B is an upgrade of the Eneloop Mobile Booster KBC-L2A. The model number is a little confusing as it only increment from A to the letter B. I think Sanyo would be better off creating a new model number so that consumers like us can better differentiate which one is new and which one is older.
In terms of design, it is identical except that the Sanyo logo has been replaced by a Eneloop logo. The battery output has been increased so that instead of just producing 2x 500mA, it is now able to produce 1x 1A (1,000mA) to charge high consumption gadgets such as the Apple iPad and Blackberry. However the lithium-ion battery capacity still stays the same at 5,000mAh and can roughly charge your iPhone 4 which has a battery capacity of 1,420mA about 3 times in a single charge. The package now also includes a MiniUSB to MicroUSB adapter.
Got myself the Sanyo Eneloop Mobile Booster KBC-L2S after my previous Sanyo Eneloop Mobile Booster KBC-E1S could not give me enough juice for my iPhone because it is using only 2x AA batteries which only gives you.
The recommended retail price (RRP) for the KBC-L2S is S$69.90, but I got it for S$57 from ebay and paid additional S$2 for delivery. The seller name is Desmond Han (tecpoint2139). His service is excellent and efficient, I ordered at 10pm on Friday, 9th January 2010 and it was delivered to me at 1pm on Saturday, 10th January 2010! That is less than 24 hours and furthermore it is on a weekend! In the Eneloop paper bag, there are several goodies as well like the Eneloop 2010 calendar and the Eneloop Product Catalogue.
Bought the Sanyo Eneloop Mobile Booster KBC-E1S for S$34.90 (member price) from Challenger. Need the extra battery juice for my iPhone 3GS when I am in Taiwan and Hong Kong!
I was deciding between the KBC-E1S and the KBC-L3S. The KBC-E1S uses 2x AA batteries while the KBC-L3S uses the built-in lithium-ion battery. I was thinking that AA batteries are more readily available outside and hence I am able to buy any AA batteries and use it to charge my phone. Also the KBC-E1S includes 2 rechargeable eneloop batteries.