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In terms of design, it is identical except that the Sanyo logo has been replaced by a Eneloop logo.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.

The Sanyo Eneloop Mobile Booster KBC-L2B will be available by 15th December 2010 at major electronics store such as Best Denki and it retails for SGD$89.90.

Packaging Front

Packaging Back

Contents

Front View

Back View

Right View

Left View

Packaging Contents

• 1x Mobile Booster KBC-L2B
• 1x Charger input USB cable
• 1x Micro USB attachment
• 1x AC adapter

Output

• Output (1 Port): 5.0V/1A
• Output (2 Ports): 5.0V/500mA

Output Time

• Output Time (5.0V/1A): 2 Hours
• Output Time (5.0V/500mA – 1 Port): 4 Hours
• Output Time (5.0V/500mA – 2 Ports): 2 Hours

Charging Time

• Charging Time Adapter (AC Input): 7 Hours
• Charging Time Adapter (USB Input): 14 Hours

Size/Weight

• Size: 70(W) x 62(H) x 22(D) mm
• Weight: 130g

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 SGD$69.90, but I got it for SGD$57 from ebay and paid additional SGD$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.

If you are skeptical about ebay, you can get it from onlineshop.com.sg for SGD$59.90 and it includes free delivery. The reason I prefer ebay to onlineshop.com.sg is because I can use PayPal and not because it is cheaper.

The iPhone 2G has a battery capacity of 1,400 mAh, the iPhone 3G has 1,150 mAh and the iPhone 3GS has 1,219 mAh.

It is stated that each AA battery has 2,000 mAh so if I am using 2x AA battery, I should have 4,000 mAh? But unfortunately it is not true as it can charge my iPhone 3GS to only 71% which makes it 866 mAh, so I presume there is some maths formula which I have left out or because it is using AA battery.

The KBC-L2S has a capacity of 5,000 mAh and uses lithium-ion battery which technically should be able to charge my iPhone battery at least 4 times on a single charge. I did read up on HWZ Forums and apparently what is stated is true and I can charge up to 4 times on a single charge. In additional, the KBC-L2S comes with an AC charger which speeds things up because charging a 5,000 mAh lithium-ion battery is going to take a very long time using USB.

Eneloop Goodies

Packaging

Packaging Contents

Front View

Back View

DC In (Left View)

DC Out (Right View)

Bought the Sanyo Eneloop Mobile Booster KBC-E1S for SGD$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.

Packaging Front

Packaging Back

Packaging Contents

2 Eneloop Rechargeable Batteries Included

Back Of The Mobile Booster

*Update* My iPhone 3GS is on 25% battery and I started charging at 00:00 (midnight) exactly. The Mobile Booster KBC-E1S was drained completely at 1.20am and my iPhone 3GS was charged till 71%. So that makes it 80 minutes to charge 46%.

*Update 2* More detailed review over at http://arstechnica.com/apple/news/2009/01/icharging-on-the-go-with-the-sanyo-kbc-e1.ars