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121RG, 121RPS

The ACDelco 121RPG is a Maintenance Free Automotive Battery.

Features and Benefits:

  • Overall terminal design minimizes acid leaks, seepage, corrosion, and black post, which helps the terminal posts to stay clean and corrosion-free.
  • Both positive and negative grids are Lead-Calcium alloy, maximizing corrosion resistance, optimizes cycle life and minimizes water consumption to optimize battery durability.
  • Premium alloys and high-density paste for maximum performance.
  • Envelope Separator design, helps eliminate shorting and "corrode-through" to maximize reliability and battery life. Sealed on three sides, the ACDelco Silver batteries separators are shaped like an envelope, made of polyvinyl chloride. The Envelope Separators are puncture-resistant with a back web rib design to allow good electrolyte diffusion between the plates while preventing them from touching each other. While maximizing acide circulation that allows for the battery to remain cooler, to help with battery life.
  • Manufactured with doezens of quality control checks to provide ACDelco quality assurance.
  • Some ACdelco Silver parts may have formerly appeared as ACDelco Advantage or ACDelco Professional Silver.
  • The ACDelco 121RPG replaces the ACdelco part number 121RA, 121RPS.


ACDelco Silver 18 Month Batteries have an 18 month limited warranty period.

Warranty Does Not Cover

  • Discharged batteries that can be recharged and returned to service.
  • Cost of recharging or for use of rental batteries or vehicles.
  • Labor cost for battery removal installation.
  • Batteries damaged due to charging system failure, negligence, abuse, accident, improper installation, or freezing. 
  • Loss of time, inconvenience, loss of vehicle use, or other incidental consequential damages.
Applications: Automotive|Light Truck|CommercialWeight: 30.6 LBsCA: 750Volts: 12 VManufacture: Johnson Controls
BCI Group Size: 121RLength: 8.2 INCCA: 600Terminals: SAE Post, Front POS RightChemistry: Flooded Lead Acid
Battery Type: StartingHeight: 8.4 INAH: 55UPS Able: No, HazardousHazardous: Yes
Maintenance Free: YesWidth: 6.9 INReserve Capacity: 100Safety Data SheetBattery Specification Sheet
More Information
Maintenance FreeYes
BCI Group121R
UPS AbleNo, Hazardous
Disable Add to CartYes
ApplicationAutomotive, Commercial, Light Truck
BCI Size121R
ChemistryFlooded Lead Acid
Also Known As:DEL121RG,121RPS, DEL121RPS,121R-6YR
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