Is the PWR-S5 a good daily-driver battery?

It can start an engine, but its 10 Ah capacity gives little reserve for lights, audio or accessories with the engine off. Most buyers use it as a second or competition battery.

How does it compare with a standard group-size car battery?

It delivers far more cranking current from a much smaller case, but a normal battery offers several times the reserve capacity for everyday use.

Can it run a large car audio system?

Yes, its 5,000-watt peak discharge suits high-power amplifiers for short bursts. Pair it with a capable charging system, since the small capacity drains fast.

What charging does it need?

Use a charger with an AGM setting and avoid letting it sit deeply discharged. Recharge it after heavy use to protect its life.

The battery itself. Check whether your terminals and hold-down fit the small case before installing.

Where is the XS Power PWR-S5 cheapest?

At XS Power, for $599.99, as of our latest check.

Where can I buy the XS Power PWR-S5?

15 stores we checked sell it, including Hi-Tech Car Audio, Beefcake Racing, GP Car Audio, Soundlabz, XS Power.

XS Power PWR-S5

Best price now

$599.99at XS PowerChecked 3 h ago

Compared across 15 stores. Prices are checked against each store and labelled with when.

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What reviewers say

Owners of the PWR-S5 line tend to be audio competitors and racers who praise the cranking punch from a small case. Complaints center on the low capacity and short life when it is deeply drained or charged poorly.

What people mention

Cranking powerPraisedOwners say it starts high-compression engines and big audio systems without strain.
CapacityCriticisedThe 10 Ah rating leaves little reserve, so it drains quickly when the engine is off.
SizePraisedBuyers like the small, light case for tight engine bays and race cars.
DurabilityMixedSome report long service with careful charging, others see early failure after deep discharges.

About the XS Power PWR-S5

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XS Power PWR-S5

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XS Power PWR-S5

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