XS Power S545 - S Series 800W Max Amps 12-Volt AGM Racing Battery
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What's Inside?
- • S545 battery
- • (2) M5 Bolts
- • (2) Split Lock Washers
- • Owner's Manual
Extreme Performance, Everyday Reliability
The XS Power S545 AGM Racing Battery delivers 800 max amps and 243 cold-cranking amps for lightning-fast, dependable starts. Its sealed, spillproof design keeps it safe from leaks and messes. Built to withstand vibration and tough conditions, it’s perfect for both the race track and daily driving.
Power Your Vehicle and Accessories
The XS Power S545 battery delivers ample reserve power to keep your vehicle running smoothly. It can support up to 600 watts of aftermarket accessories without compromising performance. Essential components like the ECU, fuel pump, and gauges stay fully powered, ensuring reliability on every drive.
Reliable Power, Built to Last
The XS Power S545 AGM battery provides consistent, dependable power to start your engine and run your entire electrical system. Its advanced AGM technology ensures fast, efficient energy delivery. With a sealed, spillproof design, it stays safe from vibration, spills, and moisture, making it perfect for any ride.
Frequently Asked Questions (FAQ)
- • Does the S545 really have enough starting power for a racing setup?
For its compact size, users report that it provides strong starting performance. One verified Speedway Motors customer said it starts a racing lawnmower reliably, while another noted that it worked well on a micro sprint between heats.
- • Can the S545 struggle when starting a large engine?
Yes, this is one limitation worth considering. A real user discussion about using the S545 as the only battery for a high-performance Corvette raised concerns about whether such a small battery would have enough reserve to repeatedly crank a large engine.
- • What should I do if my S545 doesn't hold a charge?
There is a direct customer report on XS Power's product page stating that the S545 “doesnt hold charge.” Since the manufacturer currently shows only one customer review for the model, this should be treated as an individual reported problem rather than evidence of a widespread defect.
- • Is the S545 a good choice when battery space is extremely limited?
Yes. Its compact 6.97 × 3.38 × 5.14-inch dimensions make it attractive for racing applications where a full-size automotive battery is difficult to accommodate. Several verified buyers specifically praised its accurate dimensions and space-saving design.
- • Why might the engine need to be in good tune before using an S545?
Because the S545 is a lightweight racing battery with only 17 Ah of capacity, a poorly tuned engine that requires extended cranking can place a greater demand on its limited reserve. One verified owner specifically noted that a motor needed to be tuned and ready for a quick start rather than relying on prolonged cranking.
- • Can the S545 power accessories as well as start the engine?
It can support a limited amount of aftermarket equipment. XS Power describes the S545 as capable of powering the vehicle plus up to approximately 600 watts of aftermarket electronics, making it better suited to lightweight racing electronics than a large accessory-heavy system.
- • Do I need special terminals when installing the S545?
The battery includes 586 SAE-style terminal hardware and M6 terminal bolts, but the exact connection method depends on the vehicle. XS Power also shows optional brass post adapters for clamp-style installations, so factory cable compatibility should be checked before installation.
- • Can I leave the S545 without a charging system between races?
It can be used in racing applications without a continuous charging system, but users report recharging it between events or heats. One verified micro-sprint owner specifically used the S545 without a charging system and placed it on a charger between heats and the feature.
- • What charging voltage should I use with the S545?
For a 12V S545 being charged through an alternator or stator, XS Power/JEGS specifies approximately 13.8–14.0 volts. Using the correct charging range is particularly important with a small AGM racing battery because improper charging can affect battery life and performance.
- • Is the S545 reliable enough for daily driving, or is it mainly a race battery?
It can be used in both racing and daily-driver applications, but its compact 17-Ah design favors lightweight performance builds. Real-world feedback includes successful use on racing equipment and a motorcycle, while an audio-system owner also reported noticeably more stable power after installing one.
Features:
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The XS Power S545 AGM Racing Battery delivers 800 max amps and 243 cold-cranking amps for fast, reliable starts, whether on the track or in a daily driver. Its sealed, spillproof, and vibration-resistant design ensures durability under racing conditions and everyday use.
- The battery provides ample reserve power to run your vehicle while supporting up to 600 watts of aftermarket accessories. This includes essential components like the ECU, fuel pump, and gauges.
- The S545 AGM battery delivers reliable power to start your motor and run your entire electrical system. Its sealed design ensures safety from vibration, spills, and moisture.
Specifications:
- 12-Volt AGM Racing Battery
- Max Amps (Burst): 800
- Cranking Amps: 276
- Cold Cranking Amps: 243
- BCI Group Size: Group 34
- Volts: 12v
- Max Amps: 800
- CA: 276
- CCA: 243
- Ah: 17
- RC: 22
- Primary Watts: NA
- Secondary Watts: NA
- Polarity: R
Dimensions:
- Length (Inches): 6.97
- Width (Inches): 3.38
- Height (Inches): 5.14
- UPC: 692209015338
- Weight: 16
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
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Pretty powerful battery. There was really an improvement on my audio setup with now having a stable power. Always choose XS Power for your car’s audio power source.
