The workhorse separator for automotive starting, lighting and ignition batteries.
Printed catalogue values plus design targets. Compression and recovery behaviour from 10 to 100 kPa below — request the full TDS for customer-specific tolerances.
Verified by third-party SEM, ICP and BET analysis. RoHS & REACH compliant. Full TDS on request.
Thickness (mm) vs test pressure. Approximate values read from printed catalogue curves — measured curves ship with the full TDS.
The SLI series is our highest-volume automotive product: a 220 ±10 g/m²·mm density separator engineered for reliable cold-cranking performance and consistent behaviour on automated battery assembly lines.
Fine 0.5–2.0 μm glass microfibers give the sheet high porosity and strong wicking, holding electrolyte against stratification while resisting puncture from plate edges and lead particles.
An engine start is a high-rate discharge from the first turn of the key. High-rate discharge performance keeps cranking voltage up in every season.
SLI batteries float near full charge for years. High porosity and strong wicking hold electrolyte against stratification the whole time.
Enveloping and group assembly punish weak sheets. Puncture resistance protects against plate-edge and lead-particle shorts, at line speed.
Dual fiber-diameter construction for start-stop duty — puncture resistance up by over 100%.
The smaller cranking battery: 210±10 g/m²·mm with the same instant-discharge behaviour.
Pairs with every plate line: pasting paper for continuous grid pasting, BET ≥2.0 m²/g.
Send us your spec. Samples and the full SLI TDS ship within days.
