Battery Compatibility Guide & FAQ

Buying a replacement battery should be simple. This guide helps you identify the right battery for your device, confirm compatibility, and answer the most common questions before you buy.

How to Find the Right Battery for Your Device

Step 1 — Identify Your Device Model Number

The model number is the most reliable way to confirm compatibility. Here's where to find it:

JBL Speakers (Flip, Charge, Xtreme, Pulse): Printed on the label on the bottom or back of the speaker. Example: JBL Flip 4, JBL Charge 3.
Bose Speakers (SoundLink, Mini, Revolve): Found on the serial label inside the battery compartment or on the bottom of the device.
Harman Kardon Speakers: Printed on the base or rear label of the unit.
Panasonic Devices: Model number is on the product label, usually on the back or underside.
Robot Vacuums (Roomba, Roborock, etc.): Found on the underside of the robot, near the dustbin compartment.
Custom Lithium-ion Battery Packs

Tip: If you can't find the model number on the device, check your original purchase receipt, the product box, or the manufacturer's app/settings menu.

Step 2 — Match Your Model to Our Products

Use the search bar at the top of the store and type your device model number (e.g., "JBL Flip 4 battery" or "Bose SoundLink Mini battery"). Each product listing clearly states which device models it is compatible with.

Step 3 — Confirm Compatibility Before Ordering

Check the "Compatible With" section on each product page. If your exact model is listed, you're good to go. If you're unsure, contact us before placing your order — we're happy to confirm compatibility for you.

Frequently Asked Questions

Battery Lifespan & Cycle Life

How long will my replacement battery last?

Our replacement batteries are rated for 300–500 full charge cycles depending on the model, which is comparable to the original OEM battery. With typical daily use, this translates to 2–4 years of reliable performance. Lifespan varies based on usage patterns, charging habits, and storage conditions.

How can I maximise battery life?

Avoid fully draining the battery to 0% regularly — try to recharge when it reaches 20%.
Don't leave the device on charge continuously for extended periods once fully charged.
Store devices in a cool, dry place away from direct sunlight and extreme heat.
Use the original or a quality-certified charger and cable.

Safety & BMS Protection

Are your batteries safe?

Yes. All BATTERYWORKS replacement batteries include a built-in Battery Management System (BMS) that provides:

Overcharge protection — prevents the battery from charging beyond safe voltage limits.
Over-discharge protection — cuts off power before the battery is fully depleted to unsafe levels.
Short-circuit protection — automatically disconnects in the event of a short circuit.
Temperature protection — monitors and limits operation in extreme heat or cold.

Our batteries are tested to meet relevant safety standards. We do not sell uncertified or unprotected cells.

Can the battery overheat or swell?

Lithium batteries can swell if damaged, overcharged with a faulty charger, or exposed to extreme heat. Our BMS protection significantly reduces this risk. If you notice any swelling, stop using the device immediately and contact us.

Installation

Is battery replacement difficult?

Difficulty varies by device. Most JBL and Bose speaker batteries require basic tools (a small Phillips screwdriver and a plastic pry tool) and take 15–30 minutes. We recommend watching a device-specific teardown video on YouTube before starting. Search for your model + "battery replacement" for step-by-step guides.

What tools do I need?

Typically: a small Phillips or Torx screwdriver, a plastic spudger or pry tool, and optionally a heat gun or hair dryer to soften adhesive on glued devices. Avoid metal pry tools near the battery to prevent puncture.

Do I need to calibrate the new battery?

For best accuracy of the battery indicator, we recommend a full calibration cycle after installation: charge to 100%, then use the device until it powers off, then charge back to 100% without interruption.

Warranty & Returns

What warranty do your batteries carry?

Physical damage, water damage, and damage from incorrect installation are not covered.

What is your return policy?

If you receive a defective or incorrect item, contact us within 7 days of delivery and we will arrange a replacement or refund. Please do not install a battery you believe is incorrect — installed batteries cannot be returned unless defective. See our full Refund Policy for details.

What if I ordered the wrong battery?

Unopened, uninstalled batteries can be returned within 7 days of delivery. Contact us at our contact page to initiate a return.

Shipping

Do you ship lithium batteries across India?

Yes. We ship to all major pin codes across India. Lithium batteries are shipped in compliance with applicable courier and regulatory guidelines for safe transport of lithium-ion cells.

How long does delivery take?

Standard delivery takes 3–7 business days depending on your location. Metro cities typically receive orders faster. You will receive a tracking link once your order is dispatched.

Why might my order be delayed?

Occasional delays can occur due to courier restrictions on lithium battery shipments to certain remote pin codes, public holidays, or high-demand periods. If your order is delayed beyond the estimated window, please contact us and we'll follow up with the courier.

Still Not Sure?

If you can't find your device model in our store or have a question not covered here, we're here to help. Contact us with your device model number and we'll confirm compatibility or source the right battery for you.