Arcvolt BT 210 Cell Casing Insulating Coating
A water-based, low-build electrically insulating coating for prismatic and cylindrical cell casings, can exteriors and end caps. It is formulated to resist contact with carbonate electrolyte and to hold insulation resistance after thermal ageing, while keeping film thickness low enough that cell dimensions and the thermal path to the module are not disturbed.
Grade Arcvolt BT 210 | Range Energy and Electronics Coatings | Technology Water-based stoving insulating coating
Technical Data Sheet
Arcvolt BT 210
Issue 2026.09
1. Product description
A water-based, low-build electrically insulating coating for prismatic and cylindrical cell casings, can exteriors and end caps. It is formulated to resist contact with carbonate electrolyte and to hold insulation resistance after thermal ageing, while keeping film thickness low enough that cell dimensions and the thermal path to the module are not disturbed. It is the thinner and lower-voltage of the two BT grades and is intended for cell-level rather than pack-level insulation.
2. Features
- Water-based, low-build insulating film at 15 to 30 microns dry
- Formulated to resist contact with carbonate electrolyte
- Holds insulation resistance after thermal ageing
- Low build leaves cell dimensions and the thermal path to the module undisturbed
- Cell-level grade, the thinner and lower-voltage of the two BT grades
3. Recommended uses
Cell-level electrical insulation of prismatic and cylindrical cell casings, can exteriors and end caps. Pack-level insulation of module housings and busbar hardware is covered by Arcvolt BT 430.
Substrates. Nickel-plated steel can stock, aluminium can and end caps, stainless steel, pre-treated aluminium foil and strip.
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Water-based stoving insulating coating | Formulation |
| Appearance | Continuous, uniform film, free of blisters after stoving | Visual assessment |
| Carrier | Water | Not applicable |
| Dry film thickness | 15 to 30 microns | ISO 2808 |
| Surface resistivity | Above 1×10^13 ohms per square | ASTM D257 |
| Volume resistivity | Above 1×10^14 ohm cm | ASTM D257 |
| Dielectric strength | 15 to 45 kV per mm depending on film build, stated at the measured minimum thickness | IEC 60243-1 |
| Adhesion, cross-cut | Classification 0 to 1 on the specified pre-treatment | ISO 2409 |
| Thermal cycling | 200 to 1000 cycles between minus 40 and plus 85 degrees C with no cracking, delamination or loss of insulation resistance | IEC 60068-2-14 |
| Electrolyte resistance | Resists contact with carbonate electrolyte; exposure regime and pass criteria agreed for the project | Customer or supplier protocol |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Application method | Spray, dip-spin or roller |
| Surface preparation | Clean, dry and free of forming oil and particles, with the pre-treatment specified for the substrate. Mask terminal and weld zones before coating. |
| Dilution | Any viscosity adjustment with deionised water only, as directed for the batch supplied |
| Applied film thickness | 15 to 30 microns dry |
| Flash off | 5 to 10 minutes, with warmed air where line time allows. A film that enters the oven wet will blister. |
| Cure schedule | Stove 10 to 20 minutes at 140 to 160 degrees C metal temperature. The schedule applies to can stock, empty cans, end caps and strip before cell assembly; a filled cell is not taken through the stoving oven. |
| Next step | Remove masking and check insulation at the minimum measured film thickness before the coated cans, end caps or strip go forward to cell assembly |
Process. Spray, dip-spin or roller application at 15 to 30 microns dry. Flash off 5 to 10 minutes, with warmed air where line time allows, because a water-based film that enters the oven wet will blister. Stove 10 to 20 minutes at 140 to 160 degrees C metal temperature. Masking is required at terminal and weld zones.
6. Storage and handling
Store in the original closed containers in a cool, dry, covered area, protected from frost, direct sunlight and sources of heat. Shelf life is stated on the label and Certificate of Analysis. Handle and use the product in line with its Safety Data Sheet.
7. Safety and regulatory information
Read the Safety Data Sheet before use. Safety Data Sheets and regulatory declarations are issued by our technical centre against the product and batch supplied, so they are sent on request rather than published. Request a Safety Data Sheet or declaration.
This Technical Data Sheet is published for on-screen reference. The information is given in good faith from laboratory and application experience and describes typical values; it is not a specification and does not replace a trial on your own substrate and line. Arctic Materials may revise this sheet without notice. Issue 2026.09.
Technical Data Sheets on this site are for on-screen viewing. For a controlled copy, write to tech@arcticmaterials.com.
Other grades in this range
Need a Safety Data Sheet, a regulatory declaration or a grade specified to your line? Contact our technical centre.