CarCareTruth Score
Decent, but wear gloves and ventilate.
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Prices may varyAbout this product's hazards. This product's Safety Data Sheet uses signal word DANGER.Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
Health score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
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Translated from the manufacturer’s Safety Data Sheet, Section 8
The NCP2 preventative spray in this kit carries H319 (serious eye irritation Cat 2A) at SDS §2 mixture level. Both chemical components are used in the same work session; H319 is the chemistry basis for the recommended tier.
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
Only when: splash risk
Translated from the manufacturer’s Safety Data Sheet, Section 8
The E403 cleaner has no H315 at mixture level. Direct hand contact with dissolved corrosion slurry during the wipe/rinse step contains lead sulfate residue; skin protection is appropriate when handling the terminal area after spraying.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
Only when: in enclosed space
Beyond SDS: translated from the ingredient chemistry
The E403 cleaner has no H335 at mixture level. Aerosol delivery in a semi-enclosed engine bay warrants ventilation awareness. H373 (STOT RE Cat 2) is confirmed at mixture level for the cleaner; for seasonal home-mechanic use, single-application acute risk is low, but the organ-toxicity basis keeps the tier above not_needed. The NCP2 preventative component carries H335 and H332; use in a ventilated area especially when applying the preventative.
U.S. regulatory standard
29 CFR 1910.134; 1910.138; 1910.1000
“the primary objective shall be to prevent atmospheric contamination…”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
UN GHS hazard statement
H373“May cause damage to organs through prolonged or repeated exposure”
UN GHS Rev. 9 (2021)
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
No PPE specified in published sources for ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
Scope of these PPE tiers. The tiers on this page translate the product's Safety Data Sheet where one is published, plus its ingredient chemistry, into a comparable rating. They describe a formulation, not a situation: a tier is not a safety determination for any specific user, task, quantity, or environment. The manufacturer's label and use instructions govern how the product is handled. Where the product is used at work, the employer's PPE program and hazard assessment under 29 CFR 1910.132 decide what protection is selected, not this page.
No warranties. CarCareTruth makes no warranties, express or implied, and expressly disclaims the implied warranties of merchantability and fitness for a particular purpose.
This product ranks #3 of 6 in Battery Terminal Cleaner.
Last reviewed August 2, 2026
TL;DR H319 eye irritation on the preventative spray, an organ-toxicity code and a Prop 65 warning on the cleaner pull this kit's health score into the Serious Hazard range: wear safety glasses for both steps. Once geared up, the baking-soda cleaner handles routine terminal buildup without a wire brush, and the anti-corrosion washers keep it from coming back, though there is no color-change indicator to confirm the reaction is done.
Spray the cleaner on corroded terminals, let it fizz, rinse off, then brush with the included metal brush. Seat the felt anti-corrosion washers over the posts and apply the preventative spray before reconnecting. The broad owner consensus confirms reliable performance on routine terminal corrosion: owners describe terminals that were causing starting problems returned to normal service. No color-change indicator, so judge completion by clean posts after rinsing.
The right buy for a home mechanic who wants a complete terminal cleaning solution in one package. Skip it if terminals have years of thick crusty buildup; that level of corrosion often needs wire brushing regardless of cleaner. Also skip it if you already have anti-corrosion compound on your terminals and only need the cleaner.
DANGER is from the flammable propellant in both cans, not the cleaning chemistry. Wear safety glasses: the preventative spray carries a real eye irritation classification, and that deduction alone pulls the health score into the Serious Hazard range. The cleaner also has one organ-toxicity hazard and the kit carries a Prop 65 warning, both tracing to an undisclosed ingredient fraction; use in a ventilated area and keep ignition sources clear. Propellant-only VOC; no aquatic toxicity codes in the cleaner SDS. The corrosion dissolved from battery terminals contains lead sulfate; wash hands after handling the dissolved slurry and keep rinse water out of storm drains.
The SDS documents for both components don't make a compatibility claim for AGM or gel-cell batteries specifically, so treat that as an open question rather than an assumption. For a sealed battery, check the manufacturer's own guidance on spray chemicals near the vent area before using either can, since the general application instructions are written for standard flooded lead-acid terminals.
Eye protection is chemistry-indicated: the corrosion preventative spray carries an eye irritation classification (H319) at the SDS mixture level, and both cans are typically used in the same session. Skin and lung protection are situational rather than mandatory; direct hand contact with the dissolved corrosion slurry and aerosol use in a semi-enclosed engine bay both warrant caution, but the underlying chemistry doesn't force a required tier for either axis.
The cleaner is a spray-on, rinse-off formula: apply it to the corroded terminal, let it react with the buildup, then rinse with water before brushing with the included metal brush. There's no color-change indicator on this product, so judge whether the reaction is finished by inspecting the terminal for clean metal rather than watching for a color shift.
Yes. Both the cleaner spray and the corrosion preventative spray carry a California Prop 65 warning, confirmed on the SDS documentation for each component and visible directly on both can labels. The warning traces to an undisclosed ingredient fraction in the cleaner formula and to solvent-based ingredients in the preventative spray.
Marketing copy from NOCO, via Amazon. Not editorial.
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