Battery terminal grease prevents the green / white corrosion that forms on vehicle battery terminals when electrolyte vapour reacts with the Cu / Pb terminal post. Two chemistries: petrolatum-based (red Vaseline-class, workhorse) and silicone PDMS-based (premium dielectric). India market ~600-900 MT/year — vehicle battery replacement service drives demand. This guide gives the recommended petrolatum BOM, silicone alternative, the right grease additive package, and Indian sourcing.
| Component | Function | % (m/m) | Indian Supplier |
|---|---|---|---|
| White petrolatum (USP / BP grade, soft) | Primary base — Vaseline-class barrier | 75.0% | Savita Oil / Apar Industries / Raj Petro |
| Light mineral oil (Group I 100N) | Body softener for spreadability | 8.0% | IOCL / HPCL Group I |
| Zinc oxide | White pigment + corrosion barrier | 8.0% | Indian zinc oxide suppliers |
| Alkenyl-succinic acid CI | Ferrous + Cu / Pb corrosion inhibitor | 1.0% | King K-Corr 200 |
| Tolutriazole (TTA) | Yellow-metal (Cu, Pb) protection | 0.5% | Cobratec TT-100 |
| Fatty acid (oleic / stearic blend) | Body + adhesion enhancer | 4.0% | Croda / Godrej fatty acids |
| Red colourant (Zn / Cd-free pigment) | Traditional red battery grease colour | 1.0% | Clariant / specialty pigment |
| Group I diluent | Consistency fine-tune | 2.5% | IOCL Group I 100N |
| TOTAL | 100.0% | — | |
Process: melt petrolatum at 60-80 °C; add ZnO + fatty acid + light oil with low-shear mixing; cool to 40 °C and add CI + colourant; package warm in 25 g / 50 g / 100 g tube. Service temperature -20 to +60 °C (battery terminal environment). Ex-works cost ₹120-180 / kg petrolatum-based; ₹450-680 / kg silicone-based (LC-BTG-SIL) premium dielectric variant. Pack price ₹15-60 per tube retail. Single tube treats 5-10 batteries — long shelf life for workshop kit. Batch consistency is best verified through proper ASTM lubricant & grease testing before packing.
Battery terminal grease is applied to vehicle battery terminals to prevent the green / white corrosion that forms when battery electrolyte vapour reacts with lead-acid terminal post. Without protection, corrosion builds up over 6-12 months, increases resistance, causes starting problems.
Two chemistries: (1) Petrolatum-based — soft white Vaseline-class grease, NLGI 1, simple corrosion barrier. Cheap, widely used. (2) Silicone (PDMS) based — dielectric grease for premium / OEM. Better high-temperature stability and rubber-friendly.
Petrolatum BOM (%): white petrolatum 75%, light mineral oil 8%, zinc oxide 8%, ASA CI 1%, tolutriazole 0.5%, fatty acid 4%, red colourant 1%, balance diluent 2.5%.
Process: melt petrolatum at 60-80 °C; add ZnO + fatty acid + light oil; cool to 40 °C, add CI + colourant; pack warm in tube. Service -20 to +60 °C. Ex-works ₹120-180 / kg petrolatum; ₹450-680 / kg silicone premium.
Battery terminal grease is traditionally red for two reasons: (1) Visual identification — workshop technician can see it has been applied; (2) Marketing convention — consumers expect red. Red colour from zinc oxide (white) + iron oxide (red) or zinc-cadmium-free red dye.
Modern formulations sometimes use clear (Vaseline-class) or green / blue for product differentiation. Function is unchanged across colour. Premium OEM dielectric (Dow Corning 4 Compound) is white-grey from PDMS + fumed silica.
India market driven by aftermarket battery replacement — ~25-35 million vehicles/year × 1 application per battery = 30+ million tube applications. Volume ~600-900 MT/year — a scale that justifies reviewing the grease plant setup cost before committing to in-house production. Brands: Amaron Battery Terminal Grease, Exide Battery Grease, Permatex Dielectric (premium), Wurth Battery Pole Grease, Liqui Moly Pol-Fett, Bardahl, IOCL Servo Battery Grease, BPCL Mak, HPCL HP.
₹30-180 per 25-100 g tube retail. Lubechem custom (LC-BTG-PETRO red petrolatum, LC-BTG-SIL silicone) ex-works ₹120-680/kg by chemistry.
(1) Disconnect battery negative terminal first, then positive. (2) Clean terminal post and cable clamp with wire brush + battery terminal cleaner spray. (3) Dry thoroughly. (4) Apply pea-sized amount of grease to ENTIRE inside of cable clamp + on terminal post AFTER reconnection. (5) Reconnect positive first, then negative. (6) Tighten to spec.
Visible grease film around terminal seals atmospheric vapour. Reapply every 12-18 months or at battery replacement. Single tube (25-50 g) treats 5-10 batteries.
Petrolatum (white Vaseline) — workhorse for battery terminal. Cheap, effective for moderate temperature (≤60 °C terminal). Easy to apply. Used in 90% of Indian aftermarket. Silicone (PDMS dielectric grease) — premium for high-temperature (engine bay near exhaust), rubber boot compat (some terminal covers are EPDM that petrolatum can soften), electrical connector use.
3-5x cost of petrolatum. Used in premium 4W / motorcycle / OEM service. Functional choice based on application; petrolatum dominant in volume.
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