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Home / Lighting / Driving & light bars

Century NS40Z MF Hi Performance Battery, 12V 360CCA 63 minute reserve capacity, maintenance-free sealed top, SP small-post tapered terminals with the positive post on the right (D polarity), mud-rack base for Australian conditionsBattery top-view polarity diagram for a six-cell 12 volt battery, positive terminal at the right side, labelled 12 Volt D polarity – Century batteryLine drawing of a standard tapered lead battery post, labelled Standard Terminal Post (STD) – Century batteryCentury NS40Z MF Hi Performance Battery, side view showing the sealed maintenance-free top, flame-arrested vent, and SP small-post tapered terminals with D polarity labelCentury NS40Z MF Hi Performance Battery, top view showing the SP small-post tapered terminals with the positive post on the right (D polarity) and the flame-arrested vent between the cells

Century

NS40Z MF Hi Performance Battery 12V 360CCA 38Ah

105154

12V 360 CCA / 63 min RC starter battery with SP small-post terminals and D polarity (positive on the RIGHT). Flooded calcium wet-cell, 9.9 kg, 195 by 127 by 200 mm. Fits earlier Hilux and Hiace petrol, Mazda B-Series petrol, Ford Courier petrol, earlier Nissan Navara petrol. 30 months Century warranty.

$165.00

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Fitment-specific12V NS40Z-tray starter battery for Japanese petrol imports with D polarity and SP small-post terminals

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A 12V 360 CCA / 63 min RC starter battery for Japanese petrol imports that take the compact NS40Z tray with D polarity. The positive terminal sits on the right as you look at the top of the battery with the labels facing you, and the SP small-post tapered terminals match the factory cable clamps. Fits earlier Toyota Hilux and Hiace petrol models, Mazda B-Series petrol, Ford Courier petrol, and earlier Nissan Navara petrol where the OE is an NS40Z-D-SP. The C polarity mirror is the [handle:ns40zl-mf-century-hi-performance-battery-12v-360cca-38ah] (positive on the LEFT), which is the one to pick if your vehicle came factory-wired for C polarity.

Flooded calcium wet-cell construction with Century Platelock plate retention and mud-rack base saddle, flame-arrested lid, double-insulated separators, and a sealed maintenance-free top. Footprint is 195 by 127 by 200 mm with a total height of 220 mm over the posts, and the battery weighs 9.9 kg. Terminals are SP small-post tapered (approximately 11 mm positive top-taper, 13 mm negative), which do not fit cable clamps machined for STD standard-post tapered terminals.

This is a starter battery, not a dual-purpose deep-cycle, and the flooded calcium chemistry is not AGM, EFB, or lithium. Do not substitute into vehicles that specify AGM or EFB for stop-start charging profiles because the alternator charging curve is different. For 24V series pairing, use two identical NS40Z MF units bought on the same date and matched for state of charge within 0.1 V; mismatched age or SOC in a series pair shortens both batteries. Fuse at the starter cable origin, not at the terminal, and use the vehicle existing hold-down with 5 to 8 Nm clamp torque so the mud rack sits square on the tray.

What sets it apart

Built in Australia for Australian conditions by Century Yuasa with the Hi Performance tier Platelock plate retention, mud-rack base saddle, flame-arrested lid, double-insulated separators, and calcium wet-cell plate chemistry. Covered by 30 months Century warranty against manufacturing defects. For a flagship step-up in the same NS40Z footprint with 15 percent more cranking and 40 months warranty, see the [handle:ns40zlsx-mf-century-ultra-hi-performance-battery-12v-410cca-42ah] (STD terminal, C polarity) or the [handle:ns40zlx-mf-century-ultra-hi-performance-battery-12v-400cca-42ah] (SP terminal, C polarity).

Charging, mounting and fusing

Flooded calcium wet-cell charging profile is 14.4 to 14.7 V bulk and 13.5 to 13.8 V float at 20 degrees C, with temperature compensation of minus 18 mV per degree C above 20 degrees C and plus 18 mV per degree C below. Mount the battery on the mud-rack base saddle (not inverted) and clamp with 5 to 8 Nm torque using the vehicle existing hold-down, which on these NS40Z-fit vehicles is usually a Toyota-style top hook-down bar. Fuse the starter cable close to the battery at the cable origin using a fusible link or an ANL/MIDI/MEGA fuse sized to the cable gauge and cranking load, not a blade fuse at the terminal. For 24V series pairing in a trailer or auxiliary installation, pair two matched NS40Z MF units of the same age and state of charge. For modern European marques from 2008 onward with a BMS, reset the battery management system after installation using the manufacturer-specified procedure so the alternator relearns the battery capacity.

  • Platelock plate retention — locks the plate stack against vibration on corrugations
  • Mud-rack base — catches shed material and keeps plates clear of bridge-shorts
  • Flame-arrested lid — blocks spark propagation into vent gas
  • Calcium wet-cell — low water loss and long shelf life for Australian heat
  • Double-insulated separators — reduces internal short risk from plate shedding
  • SP small-post terminals — matches factory cable clamps on NS40Z-fit vehicles
  • D polarity layout — positive terminal on the right, matches OE cable reach
  • Made in Australia — Century Yuasa manufacturing for Australian conditions

Electrical

Voltage: 12V DC

CCA: 360 A (SAE J537)

Reserve Capacity: 63 min @ 25 A

Capacity: 38 Ah @ C20

Chemistry: Calcium wet-cell

Build

Polarity: D (positive right)

Terminal: SP small-post tapered

Hold-down: Mud rack base saddle

Length195 mm
Width127 mm
Height200 mm
Total height over posts220 mm
Weight9.9 kg

Fit the battery in the vehicle NS40Z tray with the positive terminal on the right (D polarity). The mud-rack base saddles onto the tray, so place it flat with the labels facing you and the positive post on the right. Use the vehicle existing hold-down (usually a Toyota-style top hook-down bar on NS40Z-fit vehicles, or a bottom lip clamp on some Mazda and Ford variants). Clamp to 5 to 8 Nm torque.

The flooded calcium wet-cell charging profile is 14.4 to 14.7 V bulk and 13.5 to 13.8 V float at 20 degrees C, with temperature compensation of minus 18 mV per degree C above 20 degrees C and plus 18 mV per degree C below. A standard automotive alternator curve matches this directly. Vehicles originally supplied with AGM or EFB (typically ISS stop-start vehicles) use a different alternator curve and should not be substituted with a flooded calcium wet-cell battery.

Fuse the starter positive feed close to the battery at the cable origin using a fusible link or an ANL / MIDI / MEGA fuse sized to the cable gauge and cranking load. Do not use a blade fuse at the terminal; cranking current is too high. Keep the ground strap short and crimped and bolted to clean bare metal on the vehicle chassis or engine block.

For modern European marques built from 2008 onward with an onboard BMS, perform a battery registration or reset after installation using the manufacturer-specified procedure (BMW IBS, Mercedes SBC, VW VCDS, Volvo etc.) so the alternator relearns the battery capacity and voltage curve. Vehicles that take an NS40Z tray usually do not need this step, but a European replacement installed in the same body benefits from the reset.

12V NS40Z-tray starter battery for Japanese petrol imports with D polarity and SP small-post terminals
Earlier Toyota Hilux petrol (OE NS40Z-D-SP fitment)
Earlier Toyota Hiace petrol (OE NS40Z-D-SP fitment)
Mazda B-Series petrol (NS40Z-tray D polarity)
Ford Courier petrol (NS40Z-tray D polarity)
Earlier Nissan Navara petrol (NS40Z-tray D polarity)
24V series pairing OK with a second NS40Z MF of matched age and SOC
Not for C polarity (positive LEFT) — use [handle:ns40zl-mf-century-hi-performance-battery-12v-360cca-38ah]
Not for vehicles specifying AGM or EFB stop-start chemistry
Not a dual-purpose deep-cycle — for house battery duty see Century deep-cycle range
Not for Toyota and Lexus hybrid 12V auxiliary (those take an AGM auxiliary, not NS40Z)

Q: What does NS40Z MF actually mean?
NS40Z is the Japanese Industrial Standard (JIS D 5301) battery case code for a compact starter battery with a 196 by 128 mm footprint and D polarity (positive on the right). The MF suffix is Maintenance Free, meaning the top is sealed and no water topping-up is required. No letter after the Z (as opposed to NS40ZL or NS40ZLS) means the base model with D polarity and SP terminals.

Q: What does D polarity mean and how is it different from C polarity?
Polarity describes which side the positive terminal sits on when you look down at the top of the battery with the labels facing you. D polarity puts the positive on the RIGHT; C polarity (the mirror sibling, NS40ZL MF) puts the positive on the LEFT. Vehicle factory cables are cut to length for one polarity, so swapping to the wrong polarity will leave one cable too short to reach. If you measure your old battery and the positive post is on the right, pick this NS40Z MF; if it is on the left, pick the NS40ZL MF.

Q: What does CCA actually mean, and is 360 CCA enough for my vehicle?
CCA is Cold Cranking Amps measured per SAE J537: the current the battery can deliver for 30 seconds at minus 18 degrees C while holding at least 7.2 volts. 360 CCA is the OE rating for the NS40Z-fit vehicles listed above (earlier Hilux and Hiace petrol, Mazda B-Series petrol, Ford Courier petrol, earlier Nissan Navara petrol). If your vehicle manual asks for more CCA than this (for example a diesel conversion in the same engine bay), step up to the Ultra Hi Performance NS40ZX MF at 400 CCA (D polarity) or NS40ZSX MF at 400 CCA (D polarity, STD terminal).

Q: What does Reserve Capacity (RC) actually mean?
Reserve Capacity is the number of minutes the battery can hold 10.5 V at a steady 25 A draw at 25 degrees C with the engine off. 63 minutes RC means roughly an hour of running the hazards and interior lights with the engine off before the battery drops too low to start. RC matters when you forget headlights or run a camp fridge off a starter battery between engine starts; higher RC gives more time.

Q: What does SP mean compared to STD terminals?
SP is small-post tapered terminals (roughly 11 mm positive top-taper, 13 mm negative). STD is standard-post tapered (roughly 17.5 mm positive, 15.9 mm negative). Factory cable clamps are machined to one size; swapping to the wrong terminal post will not clamp properly and will arc under cranking load. Measure the top of your old post with calipers if you are unsure; SP is noticeably skinnier.

Q: What is the difference between this NS40Z MF and the NS40ZL MF or NS40ZS MF?
All three share the same NS40Z footprint and the same 360 CCA / 63 min RC / 38 Ah / 9.9 kg electrical spec. The difference is the terminal and polarity combination: NS40Z MF is D polarity with SP terminals; NS40ZL MF is C polarity with SP terminals (positive LEFT); NS40ZS MF is D polarity with STD terminals; NS40ZLS MF is C polarity with STD terminals. Pick the one that matches your original battery label.

Q: Can I use this battery as an auxiliary deep-cycle in a dual-battery setup?
No. This is a flooded calcium starter battery designed for high short-burst cranking current and shallow discharge cycling. Running it as a house battery that is deep-discharged repeatedly will damage the plates within months. For auxiliary deep-cycle duty use a dedicated AGM, EFB, or lithium deep-cycle sized for the loads and the cycle depth.

Q: Is this battery compatible with ISS stop-start vehicles?
No. ISS (idle stop-start) vehicles cycle the starter battery far more often than a non-ISS vehicle and need either an EFB (enhanced flooded) or AGM battery with a BMS-aware alternator curve. Fitting a standard flooded calcium battery in an ISS vehicle shortens its life sharply and may trigger a battery-health warning. Check your vehicle label for an EFB or AGM requirement before ordering.

Q: Can I pair two of these in series to make a 24V system?
Yes, two identical NS40Z MF units in series give 24V at 38 Ah. Buy both at the same time, match them for state of charge within 0.1 V before connecting, and keep them paired for life. Mismatched age or SOC in a 24V series pair causes one battery to drag the other down and shortens both; replace both together when either fails.

Q: How long should this battery last, and what is the warranty?
Typical service life for a Hi Performance NS40Z starter battery in Australian conditions is 3 to 5 years, with life shortened in extreme heat (above 40 degrees C sustained) and lengthened by regular full-charge cycling. The warranty is 30 months Century against manufacturing defects on the Hi Performance tier. Keep your receipt; warranty claims go through the original seller.

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