Are CELLONIC batteries safe?

Yes, we use premium-grade cells with built-in protection against over-voltage, short-circuits and overheating. Every battery pack is tested several times before it ships, ensuring reliable, smooth performance.

Is this battery compatible with my device?

Match the model or part-number in our “Compatible with” list. If your device appears there, the battery fits perfectly—no adapters needed.

Can I replace the battery myself?

Depending on the battery type, it will either simply fit in or require only basic tools and care. If the original is glued or soldered in, or you're not confident in changing it yourself, we recommend using a professional to avoid any damage.

Can I use a higher- or lower-capacity battery than the original that came with my device?

Yes - as long as voltage and model compatibility match. Higher capacities deliver longer runtimes, lower capacities works the same but may run shorter.

Why choose CELLONIC over original, branded batteries?

CELLONIC replacement batteries offer reliable performance at a lower cost. Our batteries meet the highest standards, ensuring safe, long-lasting power, the same if not better than your original.

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Description

🔋 Power up your calls, stay connected longer, and never miss a moment!

ENDURING POWER - 2600mAh high-capacity cells keep your calls going longer without constant recharging.
SMART INVESTMENT - Extend your device’s life and avoid costly replacements with this cost-effective battery.
SEAMLESS COMPATIBILITY - Perfectly engineered for Siemens Gigaset C620 series—plug & play power upgrade.
PREMIUM NI MH TECHNOLOGY - Stable, rechargeable NiMH cells ensure consistent performance and longevity.
GERMAN STANDARD RELIABILITY - Tested for durability and efficiency to outperform generic replacements.

CELLONIC’s 2600mAh NiMH replacement battery is designed specifically for Siemens Gigaset C620, C620A, and C620H models, delivering reliable, long-lasting power tested to German quality standards. This cost-effective pack of 4 AA rechargeable batteries ensures extended call times and device longevity, making it the smart choice for professionals who demand uninterrupted connectivity.

Reviews

R**E

Saves having to buy a new phone.

It is worthwhile changing the batteries in your phone on a regular basis. These are good quality batteries.

8.04.2025

K**R

reliable

batteries delivery was quick and just what I wanted.Would recommend.

26.02.2025

R**E

Reliability.

I did not realise for a long time that the batteries in my phone needed changing. I just thought I was suffering from hearing loss. The batteries came on time and are easy to install. The recharged in the telephone cradle and now I know the phone is working well once again.

1.12.2021

B**E

Quality home phone rechargeables

Good quality higher powered rechargeable battery for my home phone. I’m very pleased with them and they arrived quickly. Enough for two phones, and ought to last a few years. I’ll post again if they don’t!

18.06.2020

B**Y

Brilliantly prompt

excellent service and just what I needed to continue using household 'phone. Busy lady

17.11.2023

D**Y

Good product.

You can’t beat buying the right batteries, in this case. Good product.

9.07.2020

S**.

Batteries for landline phone

Not had this product long enough to judge for longevity and value for money..

28.05.2021

A**E

Don't buy new phones

Batteries were a good replacement for our phones.Wife was thinking of buying new handsets.

12.12.2020

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.