Lithium offers from Amazon.com

2-pack of 6-volt PetSafe lithium batteries. For all PetSafe receivers that require 6-volt lithium battery module. Products include the deluxe bark collar, standard bark collar, and more. Batteries last for about 3 to 6 months.
Price: $3.80 [Notify me when price goes down.]

1" LCD readout. Easy to clean black mat with silver platform. Accurate to 330lbs by .2 lb. increments. Instant on-auto zero.
Price: $15.99 [Notify me when price goes down.]

PetSafe 6V Lithium Battery Module Dual Pack are replacement batteries. For all PetSafe receivers that require 6-volt lithium battery module. Batteries last for about 3 to 6 months. Measures approximately 1-1/2 by 1-1/2 inches each.
Price: $9.60 [Notify me when price goes down.]

Powerful lithium ion battery that hold a charge up to 10 times longer with 3 times the run time and 2 times the torque.. Five minute quick charge and 1 hour full charge. 3 beard guides, ear nose and brow detailer, dual foil shaver, T-blade trimmer with three guide combs.. Rechargeable.
Price: $39.99 [Notify me when price goes down.]

Best replacement for Nintendo Wii Manufacturer a/c adapter. Designed to work specifically for the Nintendo Wii Base Station. Universal voltage input lets you take your Wii to anywhere. Specifications: Plug Type: US , Input: AC 100 245 V , Output: DV 12V 3.7A.
Price: $6.25 [Notify me when price goes down.]

Best replacement for Nintendo Wii Manufacturer a/c adapter. Designed to work specifically for the Nintendo Wii Base Station. Universal voltage input lets you take your Wii to anywhere. Specifications: Plug Type: US , Input: AC 100 245 V , Output: DV 12V 3.7A.
Price: $5.95 [Notify me when price goes down.]

Rechargeable lithium-ion battery pack - up to 30 hours of play time per charge.. Unique AC port relocator allows easy charging of the battery pack. Play and charge simultaneously.. Detachable AC cord for wire-free play. Plugs into any wall outlet - faster charge than USB.. Battery pack conveniently charges while inside the Balance Board - no need to remove it once it is installed.
Price: $13.19 [Notify me when price goes down.]

This bundle includes cable and adapter for Sony PSP. Battery Pack is rechargeable, once you empty it to your other devices recharge it via a USB port.. Holds enough power to charge a USB device up to eight times without needing to be recharged itself.. 5V, 3400mAh Lithium-ion (Li-ion) battery will provide the power your USB-powered devices need..
Price: $45.99 [Notify me when price goes down.]

Nokia N-Gage Accessory.
Price: $5.00 [Notify me when price goes down.]

Lithium Ion battery technology - Charges in only 15 minutes. 1/2" Keyless Chuck with shaft lock for tighter securing bits for professional demands. Makita built 4 pole motor design for high performance lasts 5 times longer than competitive motors. Built in LED light to light up the work area.
Price: $160.50 [Notify me when price goes down.]