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WestCo Battery
The Best Battery
for your Miata
Proudly Made in the USA
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The WestCo sealed battery for the Miata is a true sealed
absorbed glass mat battery (AGM), the same type of battery technology that has become
standard with all new Mazda Miatas since their introduction. The WestCo sealed battery is
a completely liquid-free design, offering zero corrosion, no maintenance and high cranking
amperage.
If you go to Mazda to get a new factory
"replacement" battery it is not the same as the original. Replacement batteries
from Mazda are conventional flooded wet cells. It is older, less expensive technology, and
a design which over time, could leak and corrode your trunk. In additional,
"wet" batteries have a much faster self-discharge rate then sealed AGM batteries
of similar capacities.
Compare for Yourself
Features
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WestCo Battery
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Mazda Replacement
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Absorbed Glass Mat
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Yes
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No
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Sealed Battery
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Yes
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No
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Non-Spillable
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Yes
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No
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Deep Cycling
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Yes
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No
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Corrosion Free
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Yes
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No
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Liquid Electrolyte
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No
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Yes
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Amp Hour Rating @20 hr rate
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33 Ah
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32 Ah
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Cranking Amps
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475 amps
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370 amps
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Monthly Self Discharge rate %
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2-3%
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10-15%
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If you don't drive your Miata very much, and your
battery is often dead because of it, you might need PriorityStart! It
automatically disconnects your battery at a preset voltage, leaving enough battery power
to start your engine. You do nothing - PriorityStart! does the
work for you. Also check out the Accumate Battery Charger.
Key Benefits
 | Maintenance Free |
| Absorbed glass mat technology |
| Non-Spillable |
| True Deep Cycle Battery |
| Corrosion Free Terminals |
| Higher Cranking Amperage - ideal for cold climates |
| Unlike most other replacement batteries - no
special adapter is necessary. |
| Slow Discharge Rate |
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4 year Warranty from the Manufacturer. |
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Installation Information
| This is a direct replacement for the stock battery.
Dimensions are roughly
6 7/8" tall (7" to top of terminal), 5" deep & 7
3/4" long |
| A 10mm,12mm sockets with racket. Plus a
screwdriver. |
| Remove vehicle connectors from battery terminals. |
| Replace old battery with the WestCo Battery |
| Reconnect vehicle connectors.
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| You may need to reset the code
in your radio. Click here for info. |
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Pricing - Ships UPS, Physical Address required
Due to increased cost in Lead, Westco has had to increase the price of the Miata
Battery, effective May 1, 2008
| Description |
Stock # |
Price |
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WestCo Battery
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TM-420
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$101
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All batteries are shipped directly from the factory so
they will be fresh and new.
All batteries ship via UPS Ground from the warehouse closest to
you and
are currently delivered in 3-5 (please call in your order
for fastest delivery) business days depending on where you are in the
country.
We must have a street address for this item - NO P.O. Box addresses!
(Continental U.S. only -
E-mail for other shipping)
Alaska & Hawaii are shipped UPS 2nd day and costs more to ship.
Actual
shipping charges apply.
Proposition 65 Warning - Battery posts, terminals and related accessories
contain lead and lead compounds, chemicals known to the State of California to
cause cancer and reproductive harm. Wash hands after handling.
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