Exhaust Emission Reduction Specialists (Eers)
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24 technicians listed · 9 in Corona · 2 open 24/7 · 9 open weekends · 15 rated 4.5+
Data verified October 16, 2026
Listed for drivers in and around Corona, CA, these 24 shops sell, test and fit car batteries. What each one says about testing, fitting, warranties and stock comes from its own website; ratings and quotes come from public reviews.

9 of the 24 technicians we list are based in Corona; the other 15 serve Corona from towns including Riverside (11 mi), Chino (10 mi) and Ontario (13 mi). 23 of the technicians on this page have a rating, from 4.0 to 5.0 across 2,972 reviews; 17 have 50 or more reviews and 15 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price", "communication" and "quality". 2 are open around the clock; 9 are open on Saturdays and 3 on Sundays. 3 show a license on their websites; 5 list staff certifications (ASE) and 6 have a BBB rating of A or A+. 20 have ten or more years of experience, the longest 45 years. 2 offer emergency or roadside call-outs; 5 offer financing; 3 are family- or locally-owned and 7 list coupons or special offers. We have a website on file for 22 of the technicians on this page; 16 publish a contact page; 14 list a public email and 2 take bookings online. We count these figures across the technicians on this page; distances are straight-line, and hours and prices change, so confirm the details with the technician before you visit.
2 of the 24 shops on this page mention emergency or call-out service. A flat battery is the one repair that often comes to you, since the car is the thing that cannot move. Ask whether they test before selling, or only swap.