You've probably thrown away a perfectly good remote
Think back to the last "dead" electronic you binned. New batteries went in, nothing happened, so out it went. Multiply that across every household in Singapore and you've got a quiet, invisible cycle of perfectly functional devices ending up in the trash for the wrong reason.
Here's the twist: batteries are rarely the actual problem. The real culprit is sitting right where you'd never think to look — the metal contact points themselves.
The battery isn't always the problem
New batteries in, remote still dead. Most people stop there and assume the device is broken. Often, it isn't — the contact points just can't make a clean connection anymore.
Batteries deliver power through a tiny metal-on-metal connection. If that connection is coated with corrosion or other insulating deposits, electrical contact can become unreliable — no matter how fresh the batteries are. The device isn't dead. It's just insulated from its own power source.
Why Singapore accelerates this
Singapore's mean annual relative humidity is around 82%, according to the Meteorological Service Singapore, often exceeding 90% in the early morning. That's not just "a bit muggy" — it's a near-constant film of moisture in the air, settling on every exposed metal surface in your home.
That moisture is exactly what oxidises metal contact points: battery terminals, connector pins, charging ports. Oxidation doesn't happen overnight — it builds up in an invisible layer, week after week, until one day the connection just... stops. No spark, no warning. Just a device that "randomly" quit working.
And it's not limited to remotes. The same slow corrosion shows up in:
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Chargers and adapters that "don't fit properly" anymore, or need wiggling to charge
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Toys, torches, and battery devices that cut out intermittently, or need repeated battery removal and reinsertion to work again
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Copier and printer rollers that start sticking or misfeeding
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Power connectors and terminals on tools left in a shed, store room, or anywhere with poor airflow
If you've noticed any of these getting worse over time rather than failing all at once, corrosion — not a hardware fault — is the more likely explanation.
Why a wipe-down doesn't fix it
The instinct is to blow into the battery compartment or give the contacts a quick wipe. It feels like it should work. It doesn't — not really.
Compressed air moves dust. A dry cloth might shift some surface grime. Unlike loose dust or surface grime, corrosion can affect the metal itself and interfere with electrical contact. A suitable contact cleaner helps remove accumulated dirt, oil, and other contaminants that may contribute to poor connections. Where corrosion is severe, cleaning alone may not restore the component. That's the part most people miss, and it's why the "fix" so often doesn't stick: the contacts look clean for a day, then the same intermittent fault creeps back within a week.
What actually fixes it
This is exactly where a proper contact cleaner earns its keep. Mr McKenic's Contact Cleaner — a non-CFC, non-HCFC solvent — is formulated to dissolve and remove dust, dirt, grime, tar, adhesives, and flux deposits directly off electrical and electronic contact points, restoring the clean metal-to-metal connection that improves conductivity. It's quick-drying, evaporates without leaving residue, and is safe on most electronic parts, metal, and plastics.
How to use it:
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Shake the can well, and test on a small area first — especially on plastic or painted surfaces
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Switch off the power supply before spraying onto any electrical or electronic component
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Fit the straw nozzle to reach tighter, inaccessible spots
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Spray directly onto the contact points using short bursts, not one long spray
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Brush or dust away loosened contaminants if needed
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For small or sensitive components, spray onto a clean, dry cloth and wipe instead of spraying directly
For contacts exposed to constant humidity or heavier use, reapplying daily or weekly keeps corrosion from building back up.
Before you spend on a replacement
A new remote, charger, or adapter usually costs more than an $11 can of contact cleaner — and most of the time, the device you already have doesn't actually need replacing. It just needs its contacts cleaned. Same goes for that printer roller, power connector, or charging cable you were about to write off.
Multiply that across a household full of "dead" gadgets accumulated over a few humid years, and the savings add up fast — not to mention one less thing headed for e-waste.
A household essential, not a one-time fix
Once you've used Mr McKenic's Contact Cleaner on one thing, you start noticing how many other things need it. A drawer full of "dead" remotes, a torch that flickers, a toy that needs battery reinsertion every time, a printer that jams more than it should, tools in the store room that haven't worked right in months — it's rarely one device with one problem. It's the same slow corrosion, showing up everywhere humidity reaches metal contacts.
That's what makes it more of a household staple than a one-off purchase. Keep a can in the drawer, and Mr McKenic's Contact Cleaner comes in handy across almost everything with a battery, a plug, or a moving contact point — remotes, chargers, toys, tools, printers, terminals — quietly keeping the small stuff running smoothly instead of piling up as things you "should probably replace one day."
Quick FAQ
How do I know if it's corrosion and not a real fault?
If the device worked before, fails intermittently, needs wiggling or battery reinsertion to work again, or has visible discolouration on the metal contacts, corrosion is the likely cause — not a broken circuit.
Can I use this on any electronics?
It's designed for electrical and electronic contact points — remotes, connectors, terminals, Printed Circuit Boards (PCBs), printer rollers, and other electrical metal parts. Always test on a small area first, particularly on plastic or painted surfaces, and switch off power before spraying.
How often should I clean contacts in a humid climate?
For devices in regular use, cleaning every few months is reasonable. For anything exposed to constant humidity or heavier wear, reapplying daily or weekly keeps the connection clean.
Five minutes with a contact cleaner, and most "dead" electronics come back to life — no trip to the store, no new purchase, just the thing you already own working the way it's supposed to.