Hello Friend,

If you are powering your telescope gear with alkaline batteries in the Winter you are just kidding yourself.
Don't even bother with rechargeables. Total waste of time.
Disposable lithiums? Great but will drain your bank account.

Nah, what you need is right here.

I've listed 3 good choices:
 
1) This Meade LXPS 17amp power supply will do the job. 

Power all 12 VDC Meade Telescopes

1. Two 5V USB Ports
2. Two 12 VDC Car/Vehicle Ports
3. Hinged White LED Spotlight
4. Flashlight with Strobe and Red Filter
5. AM/FM Radio with Siren Mode
6. Charge and Battery Power Indicators
7. Integrated Carrying Handle
8. Includes Car and Wall Chargers
9. Fuse-Protected Output

12 volt cigarette lighter adaptor Meade scopes included:

2)  For those with smaller power demands, the 7amp Meade Power tank is also on sale.
Great for lighter mounts to mid-size.

http://khanscope.com/products/606001-meade-lxps-7-power-supply


3) This NEW  Celestron  Lithium Power tank is my absolute favourite though. It's compact and
attaches to your tripod leg and works like a demon!  (FREE SHIPPING OFFER)


 Of course, both brands of power supplies are interchangeable with all brands of scopes.

Clear Skies,

Ray

PS Sale prices end soon, so check this out while it's fresh on your mind.