NOCO Boost Plus GB40

The NOCO Boost Plus GB40 is a 12 V lithium jump starter sized for cars, boats, lawn tractors, motorcycles, and most light-duty trucks:

• 1000 A peak current is enough to crank gas engines up to 6.0 L and diesel engines up to 3.0 L from a fully dead battery.
• A 24 Wh internal lithium-ion battery holds enough charge for up to 20 jump starts before the unit itself needs recharging.
• The housing is rated IP65 with the ports closed, so the unit tolerates dust, water spray, and the kind of rough handling that comes with living in a trunk or glove box.
• A built-in 100-lumen LED flashlight with seven modes (full, half, low, SOS, blink, strobe, off) covers most roadside-light needs.
• The operating temperature range goes down to -20 °C, which is the meaningful spec for Canadian winter use — a jump starter that won’t deliver current in cold is a brick in the exact conditions you bought it for.

• Canadian winter daily-driver insurance. Cars that sit outside in cold can fail to crank after a few-day stretch below -20 °C, especially on older OEM batteries. The GB40’s -20 °C operating spec is the floor that matters here; it’ll still deliver cranking current when many consumer jump packs throttle.
• Cottage / boat trips. A boat or cabin compressor / outboard that hasn’t been started in months frequently won’t crank on its own battery. The IP65 housing tolerates marine-adjacent conditions (splash, dust, dropped on a dock).
• Trunk / glove-box keep. At 1.08 kg with clamps and a compact footprint, it fits permanently in most trunk storage compartments without being in the way.
• Roadside emergency kits. USB power-bank function covers a phone recharge after a long wait for a tow; the LED’s SOS and strobe modes add visibility on a shoulder at night.

• Large diesel trucks and heavy equipment. 6.0 L gas / 3.0 L diesel is the rated ceiling. For larger engines NOCO sells higher-capacity Boost models (GB50, GB70, GB150) — the GB40 will likely fail to crank a 5.0 L+ diesel or any commercial truck engine.
• Continuous USB power-bank use. 24 Wh of usable energy is enough for roughly two to four phone recharges — adequate for an emergency but not a substitute for a dedicated power bank if multi-day device-charging is the use case.
• Fast self-recharging. USB input is 5 V / 2.1 A only. From empty the unit takes ~3 hours to recharge at the recommended 2 A input, 6 hours at 1 A, or 12 hours at 0.5 A. No high-rate USB-C PD input here.
• Charging below freezing. Operating range goes down to -20 °C, but the charging temperature range is 0 °C to 40 °C — same Li-ion reality as most LFP power stations. Keep it inside a heated vehicle cabin to recharge after cold use.
• No NRTL safety mark on NOCO’s published material. NOCO’s GB40 data sheet does not state CSA, cULus, cETL, UL, or any other Canadian-recognized NRTL safety mark for this model. The unit is sold widely in Canada through Canadian Tire, Best Buy Canada, and NOCO’s own storefront, but absence of an explicitly stated Canadian safety mark can matter for some buyers — particularly anyone whose insurance or fleet-procurement terms ask about certified electrical equipment. Request the declaration of conformity from NOCO before purchase if certification is important to your use case.

• Cold-weather posture. Keep the unit inside the heated cabin rather than in a trunk that lives at outside ambient — this both preserves cell longevity and ensures it’s at a temperature that can still charge if you’ve drained it on a jump cycle.
• Top up periodically. Lithium self-discharge is slow but not zero. NOCO recommends recharging the GB40 every six months whether it’s been used or not, so it’s at full capacity when you actually need it.
• Clamp polarity. UltraSafe spark-proof technology means the clamps will refuse to engage if connected backward. Reduces but does not eliminate the standard precautions for jump-starting near hydrogen-emitting lead-acid batteries — work in a ventilated area and don’t smoke near a venting battery.
• What’s in the box. GB40 unit, heavy-duty precision battery clamps, USB-C charging cable, microfiber storage bag, user guide.

NOCO does not operate a Canadian direct storefront, so the primary Canadian channel for this unit is Best Buy Canada, where it typically retails around $159 CAD. Best Buy and other Canadian NOCO retailers run frequent seasonal promotions on the Boost line; the live price below may be lower than the figure shown here.