feature the best prices for PRAM/clock batteries that fit
Macintosh computers. We also carry high quality
replacement batteries that fit the MacBook Pro, MacBook,
iBook and PowerBook computers! 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 Computers and buy in bulk, we are able to offer
you the best prices! Our Mac Batteries are fresh and kept
in a special battery storage facility and our low price
includes shipping! We have illustrated instructions
available for Apple iMac Trayload and Slotload systems,
available on request with
Here to review MacBook,
MacBook Pro, PowerBook
Here to ORDER PowerBook, MacBook, MacBook Pro, and iBook
now have backup batteries for iMac G5's INTEL iMacs, Mac
Mini's! G5 Towers, Mac Pro Towers
1-877-639-1543 9-6 CST M-F
Support Line - 1-405-601-5288
9-6 CST M-F - FAX 1-405-445-0796
to order now!
Listing for ULTRALIFE 3.6V 1/2AA Size Battery
- iMacs G3
& G4 ALL
Mac G3, & G4 ALL
Mac G5 (G5
- 1.6, 1.8, Dual 1.8-Dual 2.0) (800, 900, or 2x1.0 GHz
(June 2004) (Dual 1.8, Dual 2.0, Dual 2.5)
(Early 2005) (Dual 2.0, Dual 2.3, Dual
Mac 6100 Series ALL
Mac 7100 Series ALL
Mac 7300-9600 ALL
Workgroup & Network Servers ALL
Classic I & II
Color Classic I & II
IIx, IIcx, IIci, IIsi, IIvi, IIvx, IIfx
LC, LC II, LC III & III+
LC 475, 520, 550
200-560, 600 & 600CD
6100 Series ALL
Quadra (ALL except 630)
Powertower, Powercurve, Powercenter ALL
J700, S900, S910
to order now!
Lithium - Equivalent to 922-6476. Meets or exceeds
- Mac Mini
- iMac G5
Mac G5 (Late
2005) Single 2.0, Single 2.3, Dual 2.5
Mac G5 (Late
2004) (Single 1.8 Ghz) (600MHz System Bus)
- Mac Pro
to order now!
style of this battery is no longer being produced. We
were able to locate a different improved version that
fits and works perfectly. It even had the velcro hold
down just like the original. This new style is factory
Listing for 4.5V ALKALINE Batteries
LC 575-630, 630 DOS Comp.
575-588 incl. CD models
630-640 Incl. CD models
Mac 4400-5500 All
Mac 6200-6500 All
Mac 7220, 7220 PC Comp.
Computing PowerBase All
StarMax 3000, 4000 Series
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!
Change Your 3.6V Clock Mac Battery
Changing out a battery is not difficult on most Mac
systems. Simply pry off the retainer and pull the battery
Reverse the procedure with the new battery making sure
the + is positioned correctly.
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
illustrated instructions available for iMac Trayload and
Slotload systems, available on request with purchase.
Call and ask about iMac G4 Flat
now have backup batteries for iMac G5's, Mac Mini's! G5
Towers & Mac Pro Towers.
How To Change Your Coin Cell Clock
After powering down and unplugging your system, open
your computer and locate the battery on the motherboard.
It may be easier to set the unit
on it's side.Slide the battery out from the holder. A
small screwdriver may help but use caution, the pro's use
a small plastic non conductive tool.
A plastic knife or ice cream stick would be a decent and
safer substitute for a removal tool.
Slide the new battery in, making sure the + POSITIVE
symbol shows up. While extremely rare, it is possible for
an improperly installed battery to explode.
up and restart your computer. Using preferences, reset
the clock and check your other settings.
contain chemicals that may be harmful to the environment.
You should dispose of used batteries at one of the
replaced the battery, you will want to reset several
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:
help with your hardware? Read Bob's Mac Tech
Disk. Always reset your startup disk. Your system may
not boot well or give you the flashing question mark
if it gets confused.
& Time. First, choose your time zone, then set the
date and time.
- 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.
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
and Keyboard. You'll need to reset the mouse tracking
and double-click speeds, as well as setting the
keyboard delay and repeat.
Saver or Auto On/Off. Energy saving settings, power-up
time, etc. are stored in PRAM and need to be
and Sound or Monitors & Sound. You need to reset
speaker volume and monitor bit-depth -- and possibly
looking at some of the pram batteries sold by our
competition. No one sells batteries for less than we do,
and no one sells fresher batteries than we do. I saw a
couple who advertised lower prices but by the time you
paid shipping and handling you end up paying
substantially more. What really bothers me though is some
of these low priced specials were lower milliamp
batteries. Before buying any 3.6 V Lithium Battery that
fit in most of the Macs make sure the batteries you are
getting are 1200mah. Remember we import these batteries
direct and they are not made before we order. While
lithium batteries have a long shelf life, most batteries
in the states these days are several years old. Ours are
no more than 4 months from the date they were
pricing laptop batteries you should always compare the
milliamp hour rating (shown as mAH). Sometimes a bargain
is not a bargain if it doesn't last long in your laptop.
More is always better.
are distributors for the ULTRAlife brand of high quality
replacement 3.6V Lithium Battery for the Macintosh! 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 $7.88
price includes domestic shipping. Call for quantity
discounts. These are exact replacements for Tadiran,
Saft, Maxell, Rayovac etc. and meet or exceed OEM
1/2AA Size Battery
U.L. Recognized MH18384 ISO
@232 & 2.0V Cut-off
Circuit Voltage(Nominal) : 3.6V
Discharge Current: 0.5mA
Continuous Current: 5.0mA
Pulse Current: 50.0mA
Temperature Range: -55 ~ +85
Surface Area: 7cm2
on any link below will take you to the store. Select the
when you arrive and place your order securely.
Mac clock battery in its native
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
Here to review MacBook, PowerBook
and iBook batteries!
Here to ORDER batteries now!
We carry much
more than batteries in our online store. Visit
for all your Mac accessory needs!We
accept SCHOOL and Institutional P.O.'s!
from a 31 year old company who specializes in quality
refurbished Mac and Mac clone computers. We offer a 30
day warranty on all batteries and FREE
in the continental U.S.
We offer quantity discounts! Call or EMAIL
for quantity pricing!
1-877-639-1543 9-6 CST M-F
Business Line 1-405-601-5288 9-6 CST M-F
Tech Support Line - 1-405-601-5288
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.
more than just batteries? Visit Operator
Headgap Systems Store
for new and used systems and components.