Samsung2-3hOriginal Service Pack

Battery Replacement Samsung S21

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Price List

Original (Service Pack)

The only option we offer — original.

8,000 RSD
  • Warranty: 90 days
  • In Settings: Original Samsung battery — the phone sees it as factory.
  • Original Samsung battery from Service Pack packaging
  • Authorized importer, we do not install copies

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.

Repair in 2-3h
Warranty 90 days
No data loss

Galaxy S21 Battery Replacement — an Expert Approach

The Samsung Galaxy S21 comes with a 4000 mAh battery that powers the Exynos 2100 processor and the Dynamic AMOLED display. After two to three years of everyday use the cell's capacity naturally declines — a charge that once lasted all day now barely covers half of it. When you notice such symptoms, a battery replacement is the most effective way to restore your phone's full battery life.

What the Replacement Looks Like

At Viper Mobile, with 22 years of experience working with mobile devices, we complete a battery replacement on the Galaxy S21 in 2 to 3 hours. The procedure includes:

  • carefully opening the back glass without damaging the structure
  • removing the old battery and cleaning the interior
  • installing a new Original (Service Pack) battery with full factory capacity
  • testing charging and checking all functions before the device is returned

We use only Original (Service Pack) batteries — factory components identical to those Samsung installs during production. This service comes with a 90-day warranty.

Expert Recommendation

If your Galaxy S21 barely makes it to midday or shuts down unexpectedly at 15–20% capacity, do not postpone the replacement — using a worn battery can negatively affect other components. Visit us at Bulevar Arsenija Čarnojevića 91/3 in New Belgrade, where we will quickly and reliably restore your device's battery life.

Frequently Asked Questions About Battery Replacement

How do I know if I need a new Samsung battery?

Open Samsung Members → Support → Phone diagnostics → Battery status. Samsung does not show a capacity percentage the way iPhone does — it gives a rating: Normal, Weak or Bad. On newer models (S23 and up) the exact percentage and charge cycle count also appear under Settings → Battery and device care → Battery. Practical signs it is time for a replacement: the phone shuts down at 20-30%, the battery drains faster than before, charging takes longer than usual, or the battery is physically swollen.

How long does Samsung battery replacement take?

From 2 to 3 hours. The battery swap itself is the shorter part of the job — most of that time goes to curing the adhesive that holds the back cover in place. That step cannot be rushed: if the phone is collected before the adhesive sets, the cover will not seat properly. That is why the device stays with us for the full period.

Will I lose my data during Samsung battery replacement?

No. Battery replacement does not affect your data, photos, apps, or settings on your Samsung phone. We never erase anything and never ask for your unlock code. One thing to know before the repair: after a battery replacement the phone is no longer water resistant, because the factory seal is opened once and cannot be restored to factory condition.

Is the Samsung battery original?

Yes. We use exclusively original Samsung batteries from the authorized distributor with full factory capacity. No copies or generic replacements — only originals compatible with Samsung fast charging technology.

Will the phone perform like new after a battery replacement?

The battery will be new — but the phone will not behave like it did on day one, and that is not down to the battery. Apps have grown several times over: what used to take 30 MB now takes 150 MB and draws far more power. So a new original battery in a Galaxy S21 after five years of use will not last as long as the factory one did — the same capacity now powers a much heavier load. A battery replacement fixes sudden drain, shutdowns at 20-30% and charging several times a day; it does not turn the phone back into the year it was bought. An original Samsung battery typically retains over 80% capacity through the first 2 years of normal use (about 500 charge cycles).

How much does a Samsung battery replacement cost?

The price depends on the model — exact prices for every Galaxy model are listed in the price table on this page. The price is fixed per model and includes an original Service Pack battery, professional installation and VAT, with no hidden costs. If your model is not in the table, call us for an exact price.

What warranty do I get on a Samsung battery replacement?

The warranty is 3 months (90 days) on the installed battery and labor. The exception are Galaxy Z Flip and Z Fold models — repairs on foldable devices are performed only with the customer’s consent and without warranty, because authorized suppliers do not provide a warranty on parts for those models. The battery warranty also does not apply if the back cover is cracked — a shard of glass can fall inside and puncture the new battery. If we replace the back cover during the same visit, the battery keeps its full warranty.

8,000 RSD

Courier Service

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

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Our repair shop is located in New Belgrade — phone repair New Belgrade

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