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Product

SAE J1127 Automotive & Heavy-Duty Starter / Ground Battery CablesSAE J112760 V DC (25 V AC)-40 to +105 °C

SGR Rubber Battery CableSAE J1127 Type SGR 60 V DC starter and ground flexible EPDM synthetic rubber battery cable

SGR is an extra-flexible SAE J1127 Type SGR starter and ground battery cable engineered for 60 V DC automotive, marine, fleet service booster, and cold-climate off-highway equipment applications. Combining rope-lay finely stranded bare copper conductors with a

Oil & Acid Res.
SAE J1127 Flame
-40 °C Cold Flex
SAE J1127 SGR
Order designation
SGR 1 AWG (42.4 mm²)
Nom. OD
13.60 mm
Copper mass
242.4 kg/km
Total mass ≈
418.0 kg/km
Min. bend R
81.6 mm
All sizes (8)
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Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
60 V DC (25 V AC
Max 60 V DC
Test voltage
1000 V AC (spark
Dielectric withstand
Operating temp
-40 to +105 °C
Short-circuit +200 °C
Min. bend radius
4 × D
Flexing 6 × D
Primary standard
SAE J1127
SAE J1127 Type SGR
Flame rating
SAE J1127 45° fl
Fire & safety compliance

Typical values for this cable type, based on SAE J1127 — confirmed in the datasheet and quotation for your order.

Application fit

Is SGR right for your machine?

Used for cold-weather vehicle starter leads, vibration-absorbing engine-to-frame connections, heavy-duty fleet booster cables, and battery inverter banks.

Motor stator, traction & converter leads

Suitable

Ideal for high-vibration engine-to-chassis ground straps and starter leads requiring maximum limpness

Trailing & towing

Suitable

Widely used for heavy-duty fleet jump-start booster cables and portable battery charger leads

Switchgear & control cabinet wiring

Suitable

Easy tight-radius routing inside cramped battery boxes, inverter enclosures, and service trucks

Fixed installation

Suitable

Suitable for fixed vehicle and stationary generator battery interconnects

Typical machinesCold-Climate Commercial & Off-Highway VehiclesFleet Service Jump-Start & Booster CablesBattery Bank & Off-Grid Inverter Interconnects

Construction

Layer by layer

Rope-lay finely stranded annealed bare copper (SAE J1127); Thermoset synthetic rubber (EPDM / CPE elastomer) battery insulation (SAE J1127 Type SGR); Paper separator wrap over copper strands for rapid clean stripping; Integral single-layer thermoset synthetic rubber battery insulation and jacket (Black or Red).

123
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1ConductorRope-lay finely stranded annealed bare copper conductor (SAE J1127)SAE J1127
2TapePaper separator wrap for clean terminal strippingSAE J1127
3SheathThermoset synthetic rubber (EPDM/CPE) flexible battery jacket (Black / Red)SAE J1127

Cold-Climate Commercial & Off-Highway Vehicles

Thermoset EPDM rubber jacket stays supple down to -40 °C, absorbing engine rock and chassis flex without cracking.

Fleet Service Jump-Start & Booster Cables

Provides superior coilability and hand flexibility compared with stiff PVC or XLPE battery cables.

Battery Bank & Off-Grid Inverter Interconnects

Allows tight-radius jumper bends between closely spaced 12 V / 24 V / 48 V deep-cycle batteries.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on SAE J1127. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage (U0/U)
60 V DC (25 V AC)
Max. operating voltage
60 V DC
Dielectric test voltage
1000 V AC (spark/dielectric test per SAE J1127)
Insulation resistance
SAE J1127 cold bend, oil immersion & dielectric compliance

Thermal

Operating temperature range
-40 °C to +105 °C
Dynamic / flexing temperature
-40 °C to +105 °C
Max. short-circuit temperature
+200 °C

Mechanical

Min. bend radius (fixed)
4 × D
Min. bend radius (flexing)
6 × D
Max. tensile pulling load
15 N/mm²
Vibration & mechanical duty
High-flex engine movement & portable booster leads

Resistance

Flame retardancy
SAE J1127 45° flame test (self-extinguishing)
Oil & fluid resistance
SAE J1127 oil, battery acid & fuel splash resistant
UV, weather & ozone
Weather, ozone, UV & sub-zero cold-flex resistant
Chemical & environmental
Resistant to sulfuric battery acid, engine oil, antifreeze coolant and moisture

Reference standards

Governing standard
SAE J1127 (2020) — Surface Vehicle Standard — Low Voltage Battery Cable (Type SGR)
Applicable clauses
SAE J1127 Type SGR
Secondary reference
ISO 6722-1 — Road vehicles — 60 V and 600 V single-core cables

Identification

Core identification
Single-core battery conductor (Red for positive +, Black for negative/ground -)
Outer sheath colour
Black or Red
Surface print legend
TEBAOFLEX — SGR — SAE J1127 — <AWG> — 60V DC — -40°C TO +105°C — RUBBER

Sizes

8 standard configurations (SGR)

Nominal dimensions, copper weight, total mass and electrical parameters for SGR per SAE J1127.

Dimensions & masses
DesignationSize / ConfigurationStranding · WallNom. OD
mm		Copper
kg/km		Total mass ≈
kg/km		Min. bend R
mm		Enquiry
SGR size schedule
SGR 6 AWG (13.3 mm²)6 AWG (13.3 mm²)133/27 · 2.1 mm8.7092.8160.052.2
SGR 4 AWG (21.2 mm²)4 AWG (21.2 mm²)133/25 · 2.4 mm10.60133.4230.063.6
SGR 2 AWG (33.6 mm²)2 AWG (33.6 mm²)259/26 · 2.5 mm12.50197.2340.075.0
SGR 1 AWG (42.4 mm²)1 AWG (42.4 mm²)259/25 · 2.5 mm13.60242.4418.081.6
SGR 1/0 AWG (53.5 mm²)1/0 AWG (53.5 mm²)259/24 · 2.5 mm14.90297.0512.089.4
SGR 2/0 AWG (67.4 mm²)2/0 AWG (67.4 mm²)259/23 · 2.5 mm16.30366.6632.097.8
SGR 3/0 AWG (85.0 mm²)3/0 AWG (85.0 mm²)259/22 · 2.5 mm18.00455.3785.0108.0
SGR 4/0 AWG (107.2 mm²)4/0 AWG (107.2 mm²)413/23 · 2.5 mm19.80567.2978.0118.8
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and tolerances conform to SAE J1127.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
Dielectric voltage withstand & conductor DC resistance1000 V AC (spark/dielectric test per SAE J1127)100 % of production lengths
Sample tests
Insulation wall thickness, hot-set / pinch & cold bendConforms to SAE J1127 sample scheduleEvery production batch
Fluid immersion, flame propagation & thermal agingSAE J1127 45° flame test (self-extinguishing)Type qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

SAE J1127 Type SGRISO 6722-1 (2011)RoHS 3 & REACH Compliant

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX — SGR — SAE J1127 — <AWG> — 60V DC — -40°C TO +105°C — RUBBER
Delivery form
Non-returnable wooden drums, export reels or shrink-wrapped coils
Standard drum lengths
100 m · 250 m · 500 m · 1000 m
MOQ
200 m (stock sizes) · 500 m (custom lengths)
Lead time
2–3 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFSGR Rubber Battery Cable – technical datasheet8 sizes · construction, technical data, approvalsXLSXSGR spec data (Excel)All 8 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What does the 'R' in Type SGR stand for?
In SAE J1127, 'S' stands for Starter, 'G' stands for Ground, and 'R' stands for Rubber (thermoset synthetic elastomer) insulation.
Why choose SGR over SGT or SGX?
SGT (PVC) and SGX (XLPE) are relatively stiff, especially in sub-zero weather. SGR uses a synthetic rubber compound that offers much higher flexibility for tight battery box bends, engine vibration isolation, and portable booster cables.
Can SGR be used as a welding cable?
SGR is designed and tested to SAE J1127 for 60 V DC battery starting and grounding. For arc welding electrode leads requiring Class 6/K ultra-fine stranding and EN 50525-2-81 compliance, select H01N2-D or H01N2-E.
What voltage and temperature ratings apply to SGR under SAE J1127?
SGR is rated for 60 V DC (25 V AC) (maximum operating voltage 60 V DC, dielectric test voltage 1000 V AC (spark/dielectric test per SAE J1127)) and continuous operation from -40 °C to +105 °C (short-circuit up to +200 °C) per SAE J1127.

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01Selected sizes

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03Message for our engineers

SGR Rubber Battery Cable

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Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
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