How to Charge a Tablet Without Its Original Charger

Five ways to power your tablet when the charger is missing or broken

You can charge a tablet without its original charger using a USB-C cable with a compatible power adapter, a micro-USB cable if your tablet uses that port, a wireless charging pad if your model supports it, a car charger, or a portable battery pack. The method that works depends on your tablet's port type and what charging equipment you have on hand. Most tablets made in the last five years use either USB-C or micro-USB, both of which accept third-party chargers as long as the power output matches your tablet's requirements.

The fastest way to identify what will work is to look at the charging port on the bottom or side of your tablet. If it is a small rectangular slot, it is USB-C. If it is a smaller, flatter connector, it is micro-USB. If it is a large rectangular port, it is Apple's Lightning connector, which requires an Apple-certified charger or a third-party Lightning cable. Once you know the port type, you can use any charger with that same connector and sufficient power output.

Key Takeaways

USB-C tablets can charge with any USB-C power adapter rated for at least 5 watts, including phone chargers, laptop chargers, and third-party brands.
Micro-USB tablets work with any micro-USB charger, though older chargers may charge more slowly than the original.
Wireless charging pads work only on tablets that have built-in wireless charging capability, which is rare outside of high-end iPad models.
Car chargers and portable battery packs are practical alternatives when you are away from a wall outlet.
Check your tablet's power requirements before using a charger with significantly higher wattage, as some older models may not accept fast charging.

Using a USB-C charger from another device

If your tablet has a USB-C port, you can use any USB-C charger you already own — from a phone, laptop, or gaming device. The charger does not need to be made by the tablet manufacturer. A standard 5-watt phone charger will work, though it will charge your tablet slowly. A 20-watt or higher charger will be faster.

Check the wattage printed on the charger or its cable. Most phone chargers are 5 to 18 watts. Most laptop chargers are 45 to 100 watts. Tablets typically accept chargers up to 30 watts without issue, though some newer models support higher wattages for faster charging. If you use a 65-watt laptop charger on a tablet designed for 15 watts, the tablet will draw only what it needs and charge safely, but you are not gaining any speed advantage.

The cable itself matters as much as the adapter. A damaged or low-quality USB-C cable can fail to charge or charge very slowly. If you have multiple USB-C cables, try a different one before assuming the charger is the problem.

Using a micro-USB charger

Older tablets and many budget models use micro-USB ports. Any micro-USB charger will work — from Android phones, Bluetooth speakers, or older tablets. These chargers are common and inexpensive to replace if you do not have one on hand.

Micro-USB chargers come in a wide range of power outputs, from 1 amp (5 watts) to 2.4 amps (12 watts) or higher. A 1-amp charger will charge your tablet but very slowly, sometimes taking 8 to 12 hours for a full charge. A 2-amp charger is faster and more practical for daily use. Check the amperage on the charger itself — it is usually printed as "1A", "2A", or "2.4A".

Micro-USB cables wear out quickly because the connector is fragile. If charging is slow or stops partway through, the cable is often the culprit. Inspect the connector for bent pins or loose fit. A new micro-USB cable costs $5 to $15.

Wireless charging pads for compatible tablets

Only certain tablets support wireless charging, and they are mostly high-end iPad models. If your tablet supports it, you will find that information in the original manual or on the manufacturer's website. Most Android tablets do not have wireless charging built in.

If your tablet does support wireless charging, any Qi-certified wireless charging pad will work. Place the tablet flat on the pad, centered and face-up. Charging is slower than wired charging — typically 5 to 10 watts compared to 15 to 30 watts with a cable — so expect a full charge to take 3 to 5 hours instead of 1 to 2 hours. Wireless pads cost $15 to $50 depending on brand and power output.

Car chargers and portable battery packs

A car charger plugs into your vehicle's 12-volt outlet and provides USB or USB-C ports for charging. Most car chargers output 2 to 3 amps per port, which is adequate for tablets. Dual-port car chargers let you charge two devices at once, though the power splits between them and charging slows. Car chargers cost $10 to $30 and are useful if you spend time driving.

A portable battery pack (also called a power bank) stores electrical charge and lets you charge your tablet anywhere. Capacity is measured in milliamp-hours (mAh). A tablet battery is typically 5,000 to 10,000 mAh, so a 20,000 mAh battery pack can charge your tablet once or twice. Larger packs are heavier but charge more times. Prices range from $20 for basic models to $100 for high-capacity packs with fast charging. Look for a pack with a USB-C port if your tablet uses USB-C, or a micro-USB port if your tablet uses that connector.

What to avoid when charging without the original charger

Do not use chargers with significantly lower power output than your tablet needs. A 1-amp charger on a tablet that normally uses 2 amps will charge very slowly and may not charge while the tablet is in use. Do not use chargers with damaged cables or loose connectors, as they can overheat or fail to deliver power.

Avoid extremely cheap third-party chargers from unknown brands, especially if they lack safety certifications. A charger that is too powerful for your tablet's design is unlikely to cause damage — modern tablets have built-in protection — but it is not necessary and offers no real benefit. If you are uncertain whether a charger is safe for your tablet, check the tablet manufacturer's website or contact their support line with the charger's wattage and your tablet model.

Finding the right replacement charger

If you decide to buy a new charger rather than borrow one, identify your tablet's port type and power requirements first. The original charger's wattage is usually printed on the adapter itself or in your tablet's manual. You can also search the tablet model number plus "charger specifications" on the manufacturer's website.

Once you know the port type and wattage, you have many options. Reputable third-party brands like Anker, Belkin, and Amazon Basics make chargers that cost $15 to $40 and carry safety certifications. Buying from the tablet manufacturer is more expensive but guarantees compatibility. Avoid chargers from unknown sellers on marketplace sites, as they may not deliver the stated power output or may be counterfeit.

Frequently Asked Questions

Can I use my phone charger on my tablet?

Yes, if both devices have the same port type. A USB-C phone charger works on any USB-C tablet. A micro-USB phone charger works on any micro-USB tablet. Charging will be slower than with the tablet's original charger if the phone charger has lower wattage, but it is safe and will fully charge your tablet given enough time.

What happens if I use a charger with too much power?

Modern tablets have built-in protection that prevents overcharging and overheating. A 65-watt laptop charger on a 15-watt tablet will not damage the tablet — the tablet will draw only what it needs. The extra power capacity is straightforward unused. There is no speed benefit to using a charger rated higher than your tablet's design specifications.

Why is my tablet charging slowly with a different charger?

The charger likely has lower power output than your tablet's original charger. A 5-watt phone charger will charge a tablet much more slowly than a 20-watt charger. Check the wattage on both chargers. Also inspect the cable for damage or loose connections, as a worn cable can reduce charging speed even with a powerful adapter.

Is it safe to leave my tablet plugged in overnight?

Yes. Tablets stop drawing power once the battery reaches 100 percent, so leaving it plugged in does not overcharge or damage the battery. Charging overnight is safe with any charger that matches your tablet's port type, though frequent overnight charging over years may slightly reduce battery lifespan compared to unplugging at 100 percent.

Can I charge my iPad with a USB-C Android charger?

Only if your iPad has a USB-C port. Older iPad models use Apple's Lightning connector, which requires a Lightning cable. Newer iPad Air and iPad Pro models use USB-C and can charge with any USB-C charger. Check your iPad's port to confirm which type you have.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.