IBM 08K8190 10.8V Li-Polymer Battery for ThinkPad Ultrabay Slim

by IBM

Product Details

• Product Dimensions: 7.5 x 10 x 2.2 inches ; 1 pounds
• Shipping Weight: 1.2 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B000098V6H
• Item model number: 08K8190
• Average Customer Review: 3.0 out of 5 stars  See all reviews (5 customer reviews)
• Date first available at Amazon.com: April 16, 2003

Product Description

ThinkPad T40 Series customers with extended unplugged power needs will want to consider keeping an extra battery in the Ultrabay Slim device bay. The ThinkPad Ultrabay Slim Li-Polymer Battery is a rechargeable battery which can be used in the Ultrabay Slim of the ThinkPad T40 Series. Adding this battery to your system extends your unplugged usage time. For maximum unplugged operating time customers will want both the ThinkPad T40 Series High-Capacity Li-Ion Battery and the ThinkPad Ultrabay Slim Li-Polymer Battery. This battery has an output of 10.8V and can be recharged in 2.8 to 4.0(1) hours depending on the ThinkPad system usage.Primary InformationBattery Type :  Laptop battery Battery Form Factor :  Plug-in module Battery Technology :  Lithium polymer Battery Capacity :  1.5 Ah Battery / Run Time :  2 hours Voltage Provided :  10.8 V CE C-Tick cUL UL 1950 Compliant Service&SupportService & Support Type :  1 year warranty UNSPSC CodeUNSPSC Code :  26111700 Product IDUPC:  087944873556Manufacturer Part:  08K8190

Customer Reviews

Most Helpful Customer Reviews

3 of 3 people found the following review helpful:

3.0 out of 5 stars Limited life, June 18, 2008

By 

Josh Daniel S. Davis "xaminmo" (Highland Village, TX) - See all my reviews
(REAL NAME)   

This review is from: IBM 08K8190 10.8V Li-Polymer Battery for ThinkPad Ultrabay Slim (Personal Computers)

Li-PO batteries have limited life through recharges and on the shelf. My first battery lost 35% of its capacity within 4 months and 9 cycles. My second battery lost 35% of its capacity within 6 months and 12 cycles.

When new, the batteries add 30-50% battery life, compared to the main battery. The Thinkpad power board will fully discharge the ultrabay battery before using the main battery. Also, the power board will fully charge the main batter before charging the ultrabay battery. As such, the battery routinely goes from full to zero to full, which is very hard on LiPO batteries.

The real benefit of this battery is when travelling, or otherwise operating with a need for maximum battery life without lugging extra components. Alternatively, this could be used to allow you to swap main batteries without hibernating.

Since the warranty is up on mine, it's fairly unlikely that I will acquire another one of these. It's more likely I'll purchase an additional 9-cell battery and deal with hibernate on swap.

4 of 5 people found the following review helpful:

4.0 out of 5 stars Expensive but convenient, November 30, 2007

By 

dgies (California) - See all my reviews

This review is from: IBM 08K8190 10.8V Li-Polymer Battery for ThinkPad Ultrabay Slim (Personal Computers)

Gives about a 50% boost to battery life without needing to carry spares. Replaces the optical drive which I find I rarely need on the road. Somewhat expensive.

1 of 1 people found the following review helpful:

1.0 out of 5 stars Don't Buy!, December 31, 2008

By 

hkm3 (California United States) - See all my reviews

This review is from: IBM 08K8190 10.8V Li-Polymer Battery for ThinkPad Ultrabay Slim (Personal Computers)

Your Thinkpad will always *completely* drain the Ultrabay battery before going to the primary battery. This will dramatically reduce the lifespan of the battery. My Ultrabay battery dropped to 30% capacity within 4 months, replaced it on warranty, and now is at 50% capacity.