Battery Additive Products
Expander is added to the battery’s negative active material to improve capacity, cold cranking performance, cycle life, charge acceptance, and partial-state-of-charge cycling. Our research team develops expanders to optimize performance across multiple dimensions and requirements. Hammond offers over 120 negative expander formulations tailored for specific applications:
- Automotive Starting, Lighting and Ignition (SLI)
- Motive Power/Traction
- Stationary: Float and Off-grid Energy Storage
- Golf Car, Floor Scrubber, and other deep-cycle applications
- Motorcycle and e-Bike
- Start-stop and Micro Hybrid Vehicles
See our Expander Application Guide to select the right expander for your application.
Tetrabasic Lead Sulfate
SureCure® is added to a battery’s positive active material where it acts as “seed crystals” to promote uniform tetrabasic lead sulfate (TTBLS) crystal growth during paste mixing and plate curing. This results in a number of benefits including stronger positive plates, improved plate-to-plate consistency, longer cycle life, and a typical 5% reduction in active material.
See our SureCure Application Guide to select the right product for your application.
Click this video link to see SureCure®'s function and benefits.
Sodium sulfate is added to the electrolyte in AGM batteries to improve rechargeability after a deep discharge. Hammond offers high-purity sodium sulfate in both powdered and tablet forms.
The leader in energy storage for over 85 years
Founded in 1930, Hammond Group, Inc. (HGI) is a specialty chemical company dedicated to advancing energy storage applications through proprietary chemistry. HGI’s extensive products and experience allow us to serve a range of markets across the globe with manufacturing facilities in the United States, United Kingdom, and Malaysia. In 2015, HGI completed a state-of-the-art Lead Acid Battery Laboratory (E=LAB²) in Hammond, IN for ongoing development of advanced battery & energy storage chemistry.
At Hammond Group, Inc. customers come first. Contact us to discuss our products and find out how our experience can help you be more successful.