The iPhone 11 Pro Max is a flagship model that combines the largest display with the longest-lasting battery in the iPhone 11 series. Because of its large battery, users of this model often overlook the first signs of degradation, assuming it's normal for the device to last a bit less than it used to. However, when the iPhone 11 Pro Max battery begins to noticeably weaken, professional intervention is needed.At Viper Mobile, we understand how important it is for your iPhone 11 Pro Max to perform at its optimal level. Our location at Bulevar Arsenija Čarnojevića 91/3 in New Belgrade has been serving customers since 2004, making us one of the most experienced repair shops in the region. This model uses the largest battery in the iPhone 11 lineup, with a capacity of 3969 mAh. A battery like this enables a full day of intensive use, including recording 4K video, playing demanding games, and using GPS navigation. However, precisely because of its size and complexity, replacing this battery requires additional expertise.As the battery ages, the iPhone automatically activates a performance management feature that throttles the processor to prevent unexpected shutdowns. This can drastically affect the user experience, making an expensive device feel outdated.We specialize in working with iPhone 11 Pro Max models and understand all the technical challenges this device presents. We use premium replacement batteries whose capacity often exceeds original specifications, ensuring long-term reliability.The price for a premium battery replacement for the iPhone 11 Pro Max is 7000 RSD. This investment will restore your device's original battery life and performance, which is significantly cheaper than buying a new phone. Replacing the iPhone 11 Pro Max battery requires particular expertise due to the complex internal configuration and the large number of connections that must be carefully handled. Our technicians use professional tools and anti-static workstations that protect the sensitive electronics. The entire process takes approximately one hour. Before starting, we diagnose the current battery condition and explain all the necessary steps. After the replacement, we test all functions including cameras, wireless connections, and sensors.We provide a 90-day warranty on all work performed. Call us at 065/362-61-31 for more information.
Battery Replacement iPhone 11 Pro Max
Price List
A quality aftermarket battery at full capacity. On iPhone 12 and newer, Battery Health works normally and the phone reads it as “Used” in Parts & Service History — a pre-owned original, which it is not. No pop-up warnings. 90-day warranty.
Note: if the back cover is cracked, the battery warranty does not apply — a shard of glass can fall inside and puncture the new battery. If we replace the cover during the same visit, the battery keeps its full warranty.
Frequently Asked Questions About Battery Replacement
How do I know if I need a new iPhone battery?
Check Battery Health in Settings → Battery → Battery Health. If it's below 80%, replacement is recommended. Other signs include: phone shutting down at 20-30%, rapid draining, and slow charging.
How long does iPhone battery replacement take?
iPhone battery replacement takes 1 to 3 hours depending on the model.
Will I lose my data during iPhone battery replacement?
No. Battery replacement does not affect your data, photos, apps, or settings on your iPhone. We never erase anything and never ask for your unlock code.
Is the iPhone battery original?
Yes. For iPhone 12 and newer, we use original batteries from the authorized Apple distributor that display 'Genuine Apple' status and Battery Health percentage in settings. For older models, we offer premium high-capacity batteries.
How long does a new iPhone battery last?
An original Apple battery typically retains over 80% capacity during the first 2 years of normal use (approximately 500 charge cycles). Exact lifespan depends on usage patterns.
What is the warranty on an iPhone battery replacement?
Genuine Apple (original) batteries: 6-month warranty. Premium replacement and JCID Enhanced batteries: 90 days (3 months). One exception: if the phone's back cover is cracked at the time of installation, the battery warranty does not apply — a shard of glass can fall inside and puncture the new battery. That is why we suggest replacing the cover during the same visit; the battery then keeps its full warranty. The exception applies to the battery only — all other installed parts keep their regular warranty periods.
We send a courier to pick up your phone and return it repaired. Available across Belgrade.
1,500 RSD
Hydrogel Screen Protection
With every repair — hydrogel film at a special price of 2,000 RSD. Protects against scratches and minor impacts.
2,000 RSD
Related Services
Our repair shop is located in New Belgrade — phone repair New Belgrade