AB Marvel CI (Naida M90) Rechargeable Battery Replacement

The AB Marvel Rechargeable Battery is a replacement rechargeable battery for the Advanced Bionics Naída CI M90 and Naída CI M30, the processors of the Marvel platform. It attaches to the processor in place of your current battery and charges in the Marvel battery charger. We offer it in black, in the size we list as Standard.

Marvel is the current Advanced Bionics platform, so this is not about a part going out of stock. It is about never being caught without power. A second charged battery in your bag means a long day, a delayed flight or a forgotten charge does not end with silence. Many wearers also point out that batteries do not come cheap, so a fairly priced spare matters.

AB Marvel Rechargeable Battery at a glance

Fits	Advanced Bionics Naída CI M90 and Naída CI M30 (Marvel)
Type	Rechargeable battery
Size	Standard (the only size we list)
Color	Black
Charges in	Marvel battery charger
Price	$210 (regular price $314)
Dispatch	Within 24–48 hours, tracked
Guarantee	Wrong or defective item replaced or refunded within 14 days

If you are not sure whether this AB Marvel Rechargeable Battery matches the battery you use now, send us a photo of your processor with the battery attached. We will confirm before you pay.

Will this AB Marvel Rechargeable Battery fit my processor?

Processor	Fits?	Notes
Naída CI M90 (Marvel)	Yes	This battery
Naída CI M30 (Marvel)	Yes	This battery
Sky CI M90 (Marvel, for children)	Ask us first	AB lists M batteries for both Naída CI M90 and Sky CI M90; send a photo so we can confirm
Naída CI Q90	No	Use the Q90 PowerCel 230 battery
Naída CI Q70	No	Use the Q70 PowerCel 230 battery
Naída CI Q30	No	Use the Q30 PowerCel 230 battery

Look at the model name on your processor. A name with an M, such as M90 or M30, means Marvel, and this is your battery. A name with a Q, such as Q70 or Q90, means the older Q family, which uses PowerCel batteries that will not attach to a Marvel processor.

Why keep a spare Marvel battery

A Marvel processor is only as useful as its power supply. When the battery runs flat, sound stops, and there is no way to top it up on the go without a charger and a socket.

A spare battery solves that in seconds. Swap it in when the first one runs low, then charge both overnight. People who find a spare most useful include those who:

• stream a lot of phone calls, music or TV, which uses more power
• work long shifts or study late
• travel across time zones, where charging routines break down
• care for a child who wears a Marvel processor at school

It also helps when a battery ages. If your current battery no longer lasts the day, a fresh AB Marvel Rechargeable Battery brings back a full day while you decide what to do with the old one.

Small, medium, large and Standard: about battery sizes

Advanced Bionics sells Marvel batteries, often called M batteries, in small, medium and large sizes. Larger batteries generally last longer per charge, and smaller ones are lighter and less visible.

Users often weigh this up. One Naída CI M90 wearer, comparing the medium and small batteries, worried that a smaller battery might mean a big drop in battery life. That is a reasonable concern, and the right size depends on how long your days are.

We list a single size, called Standard. If you need a particular size to match what you wear now, message us on WhatsApp before you order and tell us which one you have. We would rather confirm it than send a battery that does not suit you.

Rechargeable or disposable power for your M90

Advanced Bionics also lists an M Zinc Air Battery Pak, which lets a Marvel processor run on disposable zinc-air cells. Some people keep one as an emergency backup. We do not sell that pack, and it is not the same as this battery.

For everyday wear, most Naída CI M90 and M30 users rely on rechargeable batteries. A second AB Marvel Rechargeable Battery gives you the same kind of backup without buying and storing disposable cells, and it charges in the charger you already have.

Whichever route you choose, the goal is the same: never be left without sound because one battery ran out. If you search for a Naida M90 battery, a Marvel CI battery or an M Battery, this is the rechargeable part those names describe.

Signs your AB Marvel Rechargeable Battery needs replacing

• It no longer lasts the day the way it used to
• The processor switches off with little or no warning
• It does not seem to charge fully, even overnight
• There are cracks or damage on the battery body
• The contacts look dull, dirty or discolored and cleaning does not help
• A different battery works normally in the same processor

Before you replace a battery, wipe its contacts and the processor contacts with a dry cloth. Users of other processors report reviving a battery that seemed dead simply by cleaning the contacts. If that does not help, the battery has most likely reached the end of its useful life.

How to attach and charge the AB Marvel Rechargeable Battery

1. Charge the new battery fully in your Marvel battery charger before first use.
2. Turn the processor off and remove the old battery as shown in your user guide.
3. Check the contacts on the processor are clean and dry.
4. Line the new battery up with the processor and attach it until it is firmly seated.
5. Switch on and do a quick listening check.
6. Put the old battery on the charger so it is ready as your spare.

Never force a battery onto the processor. If it does not attach easily, check that it is the right way round and that nothing is caught between the contacts.

Battery troubleshooting

What you notice	Likely cause	What to do
Battery runs out early	Aging battery, or heavy streaming	Use a spare for long streaming days; replace the battery if it keeps happening
Battery will not charge	Dirty contacts, or it is not seated in the charger	Clean the contacts and reseat it
Processor turns off suddenly	Low charge or poor contact	Fit a fully charged battery and check it is firmly attached
Charger light behaves oddly with one battery only	That battery has a fault	Try a second battery; if it charges normally, replace the first
Nothing charges	Charger or power supply fault	Try another socket and cable, then check the Marvel battery charger

Traveling with a spare Marvel battery

Travel is where a spare battery earns its place. Long flights, layovers, day trips and new time zones all upset the usual habit of charging at night.

• Carry a charged spare AB Marvel Rechargeable Battery in your hand luggage, inside a small case so the contacts cannot touch keys or coins.
• Pack the Marvel charger and a plug adapter for the country you are visiting.
• Charge both batteries on the first night, even if the one in use still seems full.
• On long travel days, swap batteries before the first one runs flat, rather than waiting for the processor to switch off.
• If you are staying somewhere hot, keep batteries out of direct sun and never leave them in a parked car.

Airline rules for spare batteries vary, so check with your airline before you fly. In most cases spare batteries go in carry-on luggage, not in checked bags.

How to make your AB Marvel Rechargeable Battery last longer

• Charge it every night rather than running it completely flat.
• Keep it away from heat, such as a car dashboard or a sunny windowsill.
• Keep the contacts dry and clean, and wipe them gently with a soft cloth.
• Store a spare in a case, not loose with keys or coins.
• Dry the processor overnight if you sweat a lot, using an electric processor dryer.
• Rotate your batteries so each one is used regularly.

Rechargeable batteries slowly lose capacity with use. With daily use, many wearers find they need a new battery after about a year.

Is a replacement battery safe for my Marvel processor?

Yes, when it is the right battery. This is a third-party replacement, not an Advanced Bionics product. It is made to the same connector, shape and electrical specification as the battery it replaces, and we check each one before dispatch.

Some users worry that a replacement battery could cause long-term damage to their processor. A battery that matches the specification simply powers the processor in the same way. It does not change your program or settings.

If a battery arrives defective, or it is the wrong item, we replace it or refund you. If you notice swelling, heat or damage on any battery, stop using it and contact us.

Shipping, payment and returns for the AB Marvel Rechargeable Battery

Every AB Marvel Rechargeable Battery order is packed and dispatched within 24–48 hours with tracking. Delivery usually takes 12–22 business days worldwide, and duties are handled for you on most routes, so there is nothing extra to pay at the door. Shipping is free on orders over $250, which is easy to reach if you add a spare cable or charger.

Payment runs through a secure payment gateway with all major cards. If we send the wrong item, or the part arrives defective or damaged, message us within 14 days with a short video. We replace it or refund you, and we cover the return shipping. Change-of-mind returns are not accepted on hygiene-sensitive hearing parts. Full details are in our return policy.

Other Naida CI M90 and M30 parts you may need

Keep your Naida CI M90 and M30 working with these matching spares:

• Marvel battery charger – charges your batteries overnight
• Marvel CI ear hook (M-Hook) – a fresh ear hook for a secure fit
• Marvel CI T-Mic – microphone at the ear canal
• Electric dryer for processors – nightly drying for processor and contacts

AB Marvel Rechargeable Battery FAQ

Does this battery fit the Naída CI M30 as well as the M90?

Yes. It fits both Marvel processors, the Naída CI M90 and the Naída CI M30.

Which size is the Standard battery?

We list one size and call it Standard. Advanced Bionics uses small, medium and large. If you need a specific size, message us before ordering.

Will it work in my Q90 or Q70?

No. Q-series processors use PowerCel batteries. See the matching PowerCel 230 battery for your model.

How long does it last per charge?

It depends on your program, streaming and settings, so we do not quote hours. Charge it every night and keep a spare for long days.

Do I need a new charger?

No. It charges in the Marvel battery charger you already use.

Should I charge it before first use?

Yes. Charge it fully before you wear it for the first time.

Can a replacement battery damage my processor?

A battery made to the same specification powers the processor the same way. If anything looks wrong, such as heat or swelling, stop using it and contact us.

How often should I replace my Marvel battery?

With daily use, many people replace a battery after about a year, or sooner if it no longer lasts the day.

Can I take a spare battery on a plane?

Spare batteries usually travel in carry-on luggage. Check your airline rules before you fly.

Questions about your Naida CI M90 and M30? Message us on WhatsApp (+1 520 473 4179) with a photo of your processor and we confirm the right part before you pay.