Automotive Start-Stop

Name: Automotive Start-Stop AGM Separator
Brand: Alpha Beta

Dual fiber-diameter separator for start-stop AGM batteries — built for high vibration and deep cycling.

0.8–1.5 mm @100 kPa220±10 g/m²·mmdual Ø 1.0–3.0 + 5.0–10.0 μm

Datasheet

The numbers, in full

Printed catalogue values plus design targets. Compression and recovery behaviour from 10 to 100 kPa below — request the full TDS for customer-specific tolerances.

Technical data AGM · glass microfiber

Thickness range @100 kPa (0.8–1.5) ±5%mm

Density 220 ±10g/m²·mm

Avg. fiber diameter 1 (fine matrix) 1.0–3.0μm

Avg. fiber diameter 2 (reinforcement) 5.0–10.0μm

Design values

Specific surface area (BET) ≥ 1.6m²/g

Avg. beating degree ≥ 35°SR

Great float performance and instant high-current discharge

High porosity for great electrolyte retention

Great electrolyte stratification resistance

Good strength under wet conditions to maintain compression in the battery

Puncture resistance increased by over 100%

Tenacity increased by over 200% for high-vibration duty

Wet tensile strength increased by 103% for longer service life

Great mechanical strength for high-speed automated assembly

Verified by third-party SEM, ICP and BET analysis. RoHS & REACH compliant. Full TDS on request.

Compression · 10→100 kPa compression dry recovery wet recovery

Thickness (mm) vs test pressure. Approximate values read from printed catalogue curves — measured curves ship with the full TDS.

Dual fiber-diameter construction

Two fibers. One separator that survives the line — and the road

Our start-stop series uses a dual fiber-diameter construction: a fine glass microfiber matrix for electrolyte retention and surface area, reinforced by a coarser fiber fraction for mechanical strength. The result is a separator that survives high-speed automated enveloping lines and keeps plate-group compression stable over the battery’s cycling life.

Compared with conventional AGM constructions, this series delivers over 200% higher tenacity, over 100% higher puncture resistance and 103% higher wet tensile strength — sharply reducing the risk of dendrite shorts and assembly damage. Around 10% non-wetting channels keep oxygen recombination paths open under saturation.

VS conventional AGM constructions (baseline = 100)

Tenacity +200%

Wet tensile strength +103%

Puncture resistance +100%

conventional AGM dual fiber-Ø series

Reduces dendrite shorts and assembly damage on enveloping lines.

Duty cycle

What start-stop demands of a separator

Frequent restarts

Every traffic light is a cranking event. Great float performance and instant high-current discharge keep restart voltage stable, trip after trip.

PSoC cycling

Partial state-of-charge operation stratifies electrolyte and encourages dendrite growth. High porosity holds acid in place; puncture resistance raised by over 100% blocks shorts.

Constant vibration

Engine-bay vibration works on every interface in the cell. Wet tensile strength (+103%) and tenacity (+200%) keep plate-group compression stable over the battery’s service life.

Related series VIEW ALL 7

SERIES 02

SLI

Same thickness and density envelope, single fiber blend — the workhorse for starting, lighting, ignition.

0.8–1.5 @100 kPa · 220±10 g/m²·mm · Ø 0.5–2.0 μm

SERIES 04

Motive Power

For lines that also build traction batteries — deep-cycle duty with BET ≥1.6 m²/g.

0.5–1.2 @100 kPa · 215±10 g/m²·mm · Ø 0.5–2.0 μm · BET ≥1.6

SERIES 07

Pasting Paper

Pairs with every plate line: pasting paper for continuous grid pasting, BET ≥2.0 m²/g.

0.05–0.40 @100 kPa · 180±10 g/m²·mm · Ø 0.5–1.5 μm · BET ≥2.0

Samples & TDS

Qualifying a second source?

Send us your spec. Samples and the full Automotive Start-Stop TDS ship within days.

Request samples sales@agmalphabeta.com