How to Remove an ONN Tablet Battery Safely

Removing the battery from an ONN tablet is necessary for replacement, recycling, or disposal. This guide covers the safe disassembly process, what tools you need, and how to avoid damaging the device or injuring yourself. Always power off the tablet and work in a clean, dry area before starting.

What You’ll Need

Phillips #00 screwdriver (small cross-head)
Plastic opening tools (spudger, guitar pick, or old credit card)
Heat gun or hair dryer (optional, to soften adhesive)
Suction cup (optional, for lifting the screen)
Anti-static wrist strap (recommended)
Non-conductive, flat work surface
Container for screws
Isopropyl alcohol (90% or higher) and cotton swabs (for cleaning adhesive residue)

Step-by-Step

Power off the tablet completely. Hold the power button and select “Power off” from the menu. Unplug any cables.
Remove the back cover. Most ONN tablets have a plastic back that snaps or is held by clips. Insert a plastic opening tool into the seam between the back cover and the frame. Gently slide it around the edges to release the clips. If the cover is glued, apply heat with a hair dryer for 30–60 seconds to soften the adhesive, then pry carefully.
Locate the battery. Once the back is off, you’ll see a large, flat, rectangular component with a ribbon cable or connector. It may be labeled “Li-ion” or have a battery symbol.
Disconnect the battery connector. Use a plastic spudger to gently pry up the connector from its socket on the motherboard. Do not pull on the wires. If the connector is covered by tape, remove the tape first.
Remove any screws or brackets holding the battery. Some models have a metal shield or screws securing the battery. Remove these with the Phillips screwdriver and set them aside in your container.
Loosen the adhesive. The battery is usually glued to the chassis. Apply heat (if not already done) to soften the adhesive. Then, insert a plastic card or spudger under the battery and gently pry it up. Work slowly from one corner, applying even pressure. Do not bend or puncture the battery.
Lift the battery out. Once the adhesive releases, carefully lift the battery out of the compartment. Hold it by the edges, never by the connector or wires.
Inspect the area. Check for any remaining adhesive or debris. Clean the compartment with isopropyl alcohol and a cotton swab if needed. Let it dry completely before installing a new battery.

Common Mistakes

Prying with metal tools: Metal can scratch the circuit board or short-circuit components. Always use plastic tools.
Pulling the battery wires: This can tear the connector or damage the cable. Always disconnect the connector first.
Bending the battery: Lithium-ion batteries are fragile. Bending or twisting can cause internal short circuits, leading to swelling or fire.
Skipping the heat step: Cold adhesive is hard and requires excessive force, increasing the risk of puncturing the battery.
Forgetting to disconnect the battery before other repairs: Always disconnect the battery first to avoid electrical damage to the motherboard.

Tips

Work in a well-lit area and keep screws organized by location.
If the battery is swollen, do not attempt to remove it. Dispose of the tablet at a certified e-waste facility.
Use a spudger to gently rock the connector side-to-side instead of pulling straight up.
Apply heat evenly and avoid overheating the battery itself. Keep the heat source moving.
If the battery is stuck, use a drop of isopropyl alcohol along the edge to dissolve the adhesive. Wait a minute before prying.

Troubleshooting

The back cover won’t come off. Double-check for hidden screws (often under rubber plugs or stickers). Apply more heat and try again. If it still won’t budge, use a suction cup to create a gap for the opening tool.

The battery connector is glued down. Apply a small amount of isopropyl alcohol around the connector and wait a minute. Gently lift with a spudger. Do not force it.

The battery is stuck to the chassis. Reapply heat for another 30 seconds. Use a plastic card to slowly work the adhesive loose. If you feel resistance, stop and apply more heat.

The screen is cracked or the tablet won’t turn on after reassembly. Ensure all connectors are fully seated and screws are tightened. Check that no ribbon cables are pinched. If the tablet still won’t power on, the battery may be defective or the motherboard damaged.

Battery is swollen. Do not puncture, bend, or apply heat. Stop immediately and take the tablet to a professional recycler.

Frequently Asked Questions

Is it safe to remove the battery myself?

Yes, if you follow the steps carefully and use the right tools. The main risks are puncturing the battery or short-circuiting the board. Work slowly and never force anything.

Do I need to drain the battery before removal?

It’s safer to remove a battery with a low charge (below 30%) because a fully charged battery holds more energy and is more reactive if punctured. However, it’s not strictly necessary if you handle it gently.

Can I use a metal screwdriver to pry the battery?

No. Metal tools can scratch the motherboard or puncture the battery. Use plastic opening tools or a spudger.

How do I know if my ONN tablet’s battery is removable?

Most ONN tablets have a sealed back, but the battery is still physically removable with disassembly. Check online for a teardown video for your specific model, or look for visible screws on the back.

What should I do with the old battery?

Take it to a local electronics store or e-waste recycling center. Do not throw it in the trash. Tape the connector terminals with electrical tape before disposal.

Will removing the battery void my warranty?

Yes, opening the tablet typically voids the warranty. If your tablet is still under warranty, contact ONN support for a replacement instead.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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