We feature the best prices for Macintosh clock batteries, iBook and PowerBook batteries! We discount for schools and quantity buyers, call for a quote. We sell batteries that you find in all Apple Macintosh computers and compatible systems, including UMAX, PowerComputing, Motorola and other Mac clones. We specialize in batteries for Mac systems and buy in bulk, we are able to offer you the best prices! Batteries are fresh and kept in a special battery storage facility and our low price includes shipping! Download a Mac Battery Guide in Adobe Acrobat format. We have illustrated instructions available for iMac Trayload and Slotload systems, available on request with purchase. Click Here to review PowerBook and iBook batteries! Click Here to ORDER PowerBook and iBook batteries! We now have backup batteries for iMac G5's, Mac Mini's! G5 Towers, Mac Pro Towers  Click here to go right to the battery category of the online store now! We carry much more than batteries in our online store. Visit http://resale.headgap.com for all your Mac accessory needs! Call TOLL FREE 1-877-639-1543 9-6 CST M-F We have changed manufacturers due to material shortages. We are now distributors for the same high quality replacement 3.6V Lithium Battery for the Macintosh! Our new manufacturer ABLE batteries are now in stock and shipping! We purchase these batteries factory fresh and have them airfreighted in quantity. The same high quality long lasting and powerful 1200 mAh and our same low $7.44 price includes domestic shipping. Call for quantity discounts. ABLE 3.6V 1/2AA Size Battery Features:  U.L. Recognized MH18384   ISO 9001 Approved Specifications: @232 & 2.0V Cut-off Open Circuit Voltage(Nominal) : 3.6V Standard Discharge Current: 0.5mA Max. Continuous Current: 5.0mA Max. Pulse Current: 50.0mA Capacity: 1,200mAh Weight: 9.2g Operating Temperature Range: -55 ~ +85 Reaction Surface Area: 7cm2 Clicking on any link below will take you to the store. Select the battery category when you arrive and place your order securely. Mac clock battery in its native habitat Has your system recently lost its mind? If your clock is not keeping time you need to immediately replace your clock battery. Failure to do so can cause drive errors and loss of data. Lithium Batteries last 3-5 years, and the Alkalines last as little as a year up to 2 years. These are exact replacements for Tadiran, Saft, Maxell, Rayovac etc. and meet or exceed OEM specifications. Click Here to order now! Mac Computer Listing for ABLE 3.6V 1/2AA Size Battery iMacs G3 & G4 ALL Power Mac G3, & G4 ALL Power Mac G5 (G5 - 1.6, 1.8, Dual 1.8-Dual 2.0) (800, 900, or 2x1.0 GHz system bus) Power Mac G5 (June 2004) (Dual 1.8, Dual 2.0, Dual 2.5) Power Mac G5 (Early 2005) (Dual 2.0, Dual 2.3, Dual 2.7) eMacs ALL Power Mac 6100 Series ALL Power Mac 7100 Series ALL Power Mac 7200-7215 Power Mac 7300-9600 ALL Macintosh Workgroup & Network Servers ALL Mac Classic I & II Mac Color Classic I & II Mac IIx, IIcx, IIci, IIsi, IIvi, IIvx, IIfx Mac LC, LC II, LC III & III+ Mac LC 475, 520, 550 Macintosh TV Performa 200-560, 600 & 600CD Performa 6100 Series ALL Mac Quadra (ALL except 630) Mac Centris ALL Powerwave, Powertower, Powercurve, Powercenter ALL Umax J700, S900, S910 Click Here to order now! Coin Cell Lithium - Equivalent to 922-6476. Meets or exceeds specifications. Mac Mini ALL iMac G5 ALL Power Mac G5 (Late 2005) Single 2.0, Single 2.3, Dual 2.5 Power Mac G5 (Late 2004) (Single 1.8 Ghz) (600MHz System Bus) Mac Pro Towers ALL Click Here to order now! Mac Computer Listing for 4.5V ALKALINE Batteries Mac LC 575-630, 630 DOS Comp. Performa 575-588 incl. CD models Performa 630-640 Incl. CD models Performa 5200-5440 All Performa 6200-6420 All Mac Quadra 630 Power Mac 4400-5500 All Power Mac 6200-6500 All Power Mac 7220, 7220 PC Comp. Twentieth Anniversary Mac Power Computing PowerBase All Motorola StarMax 3000, 4000 Series Umax C500, C600, J710 Still not sure which battery you need? Give us a call TOLL FREE 1-877-639-1543 9-6 CST M-F and we will be glad to help you place your order for the correct battery! How To Change Your Clock Battery Changing out a battery is not difficult on most Mac systems. Simply pry off the retainer and pull the battery out. Reverse the procedure with the new battery making sure the + is positioned correctly. Restart your system and reset the date and time and other control panel settings as needed. Note 4.5V Batteries are small square and black. They are stuck down with velcro. Simply pull up the old battery and unhook the cable. Reverse the procedure. There is only one way the cable plugs back in. We have illustrated instructions available for iMac Trayload and Slotload systems, available on request with purchase. Call and ask about iMac G4 Flat Panels. We now have backup batteries for iMac G5's, Mac Mini's! G5 Towers & Mac Pro Towers. Read about proper battery disposal Once you've replaced the battery, you will want to reset several settings. If you're on a network, you'll want to open the Chooser and enable AppleTalk. Note some Macs may not support all these control panels (preferences in OSX). These are the control panels you'll need to use: Startup Disk. Always reset your startup disk. Your system may not boot well or give you the flashing question mark if it gets confused. Date & Time. First, choose your time zone, then set the date and time. Memory - Mac OS 8.5 and later will usually set this automatically. Set your cache to a Meg if you have plenty and 1 meg over on virtual. Network or AppleTalk. If you're on a network that isn't LocalTalk, you will need to reset your network connection on any Mac with a LocalTalk port. Mouse and Keyboard. You'll need to reset the mouse tracking and double-click speeds, as well as setting the keyboard delay and repeat. Energy Saver or Auto On/Off. Energy saving settings, power-up time, etc. are stored in PRAM and need to be reset. Monitors and Sound or Monitors & Sound. You need to reset speaker volume and monitor bit-depth -- and possibly resolution. Need help with your hardware? Read Bob's Mac Tech Tips Click Here to review PowerBook and iBook batteries! Click Here to ORDER batteries! We now have backup batteries for iMac G5's, Mac Mini's! G5 Towers, Mac Pro Towers Order securely from a 22 year old company who specializes in quality refurbished Mac and Mac clone computers. We offer a 30 day warranty on all batteries and FREE SHIPPING in the continental U.S. We accept SCHOOL and Institutional P.O.'s! We offer quantity discounts! Call or EMAIL US for quantity pricing! Call TOLL FREE 1-877-639-1543 9-6 CST M-F Business Line 1-901-759-1543 9-6 CST M-F FAX 1-615-523-1360 Order securely from our Mac based and hosted systems. We NEVER give out email or other information and your email is used only to send you confirmation. Need more than just batteries? Visit Operator Headgap Systems Store for new and used systems and components. http://resale.headgap.com Our credit card transactions are secured by: Apple, Macintosh, Mac, iMac, PowerBook, iBook, Performa, Quadra, & Centris are registered trademarks of Apple Computer. All other trademarks are properties of their prospective owners.