Buick · 2012–2016 (US)

Buick Regal eAssist battery replacement

Buick Regal eAssist battery diagnosis and replacement across the Phoenix metro. The Regal eAssist uses the same small 115V lithium pack as the LaCrosse eAssist, and stop-start trouble is the usual first symptom.

Call 833-995-7966 Schedule a repair

Buick Regal eAssist hybrid battery at a glance

System: eAssist mild hybrid — assists the engine, never drives the car alone
Battery type: Lithium-ion
Same pack as: Buick LaCrosse eAssist
Repair route: Replaced as a complete assembly. Lithium packs are not rebuilt at module level
Installation: Battery only. Fitting at our shop in the Phoenix metro is $250 on top of the pack price.

Get a price for your Buick Regal eAssist

Pick what you need and how to reach you. You get a written quote before anything is ordered.

Symptoms Regal eAssist owners report

Auto stop-start becoming intermittent, then stopping entirely.
Rougher engine restarts at lights.
A dashboard battery or charging message that reads more serious than it is.
City fuel economy slipping a little, rather than dramatically.
A weak 12V battery producing all of the above — which is why it gets tested first.

Prices and fitment for the Buick Regal eAssist

Buick Regal eAssist Hybrid Battery (2012–2017)

Buick Regal eAssist hybrid battery questions

My stop-start has stopped working. Is it the eAssist battery?

It can be, and it's the most common way this pack announces itself. It can equally be the 12V battery, which is much cheaper — and which is why that gets tested first.

Is the Regal eAssist pack the same as the LaCrosse's?

Yes, the same eAssist pack. Part numbers are still confirmed against your VIN before anything is ordered.