The Samsung Galaxy Z Flip 4 replacement battery is a zero-cycle matched pair (upper 1080 mAh + lower 2570 mAh = 3700 mAh combined) that mirrors the factory split-cell design used in Samsung’s foldable clamshell chassis. Both cells ship with pre-installed adhesive on the contact face, so technicians drop the pack straight into the frame without sourcing separate adhesive strips. Supplied by GA Tech NZ from local stock with same-day weekday dispatch and a 6-month manufacturing-defect warranty.
Place your order by 2PM on business days for same-day dispatch. Tracked overnight delivery for only $8Â urban areas or $13 rural locations, across New Zealand.
$33.00
3 in stock
3 in stock
The Samsung Galaxy Z Fold 4 replacement battery is a high-quality 4400 mAh aftermarket matched pair engineered to restore your Samsung Galaxy foldable book-style to original-spec runtime. In particular, the upper cell (2060 mAh) and lower cell (2340 mAh) match Samsung’s split-pack design, so both halves drop into the existing foldable chassis with no shimming and no fit issues. In addition, NZ stock and a 6-month warranty round out the package.
This Samsung battery pair brings four advantages that matter for a foldable repair: an original-spec 4400 mAh combined capacity, pre-installed adhesive on both cells, zero-cycle factory-fresh chemistry, and full NZ logistics with same-day dispatch from local stock. The cells ship zero-cycle, which means they have not been charged or discharged before reaching you, so you get the full design lifespan from day one.
| What you get | How it benefits you |
|---|---|
| Original-spec 4400 mAh combined capacity | All-day runtime that tracks the factory cell, split as 2060 mAh upper + 2340 mAh lower. |
| Pre-installed battery adhesive | Both cells arrive with the chassis-side adhesive layer already attached, so the repair workflow is faster and cleaner. |
| Zero-cycle, factory-fresh cells | Full design lifespan from first charge. No prior wear, no shelf degradation beyond standard storage. |
| Matched pair shipped together | Upper EB-BF936ABY and lower EB-BF937ABY arrive as a kit so you replace both halves in one visit and avoid mismatched cell wear. |
| Samsung supplier part numbers EB-BF936ABY / EB-BF937ABY | Matches the OEM-equivalent part identifiers so trade technicians can confirm fit before ordering. |
| NZ stock, same-day dispatch | Weekday orders usually ship the same day with tracked overnight delivery nationwide. |
| 6-month manufacturing-defect warranty | Local NZ-backed warranty cover, handled directly by GA Tech NZ. |
First, this Samsung EB-BF936ABY / EB-BF937ABY replacement battery pair fits the Samsung Galaxy Z Fold 4. The specific Samsung model identifiers covered are: SM-F936B (Global 5G), SM-F936U (US 5G), SM-F936N (Korea 5G), SM-F936W (Canada 5G). Samsung uses these supplier part numbers across the regional variants of this foldable because they share the same chassis dimensions and split-pack architecture.
For context, the upper cell (EB-BF936ABY) rates at 2060 mAh and the lower cell (EB-BF937ABY) rates at 2340 mAh, for a combined 4400 mAh at 3.88 V nominal and 4.45 V charging cutoff. As a result, this matched pair restores native-feeling runtime after installation. In practice, customers commonly report that a tired Samsung foldable jumps from a few hours of standby back to a full day on a single charge after the swap.
Samsung’s foldable phones place one cell in each half of the chassis to keep the device thin when folded and balanced when open. As a result, both cells must be replaced together as a matched pair to maintain even charge/discharge behaviour across the pack. Replacing only one half leads to mismatched wear, reduced effective capacity, and accelerated degradation of the new cell. Therefore, GA Tech NZ ships the Samsung Galaxy Z Fold 4 replacement battery as a complete kit with both cells in the same package.
In particular, this matched pair suits three groups of buyers. First, Samsung Galaxy Z Fold 4 owners whose original cells have degraded below acceptable runtime and who want to keep using the device. Second, NZ repair shops and trade technicians who need a reliable, local-stocked Samsung foldable battery kit for fast paid repair work. Third, experienced DIY repairers who already own the precision tools for Samsung foldable disassembly. However, for first-time DIY repairers, GA Tech NZ offers professional fitting through the in-house repair service because foldable disassembly is significantly harder than standard candy-bar phone work.
Typically, a new Li-ion polymer cell retains 80 percent of its design capacity through roughly 500 full charge cycles, which works out to two or three years of normal daily use. After 500 cycles, capacity will begin to taper, and the next replacement window opens. Meanwhile, GA Tech NZ’s 6-month warranty covers manufacturing defects in the first 6 months from delivery, and the cells themselves are built to deliver the full Li-ion design lifespan when charged within Samsung’s voltage range.
Since 2017, GA Tech NZ has supplied spare parts and repair services across New Zealand. Because GA Tech NZ holds the Samsung Galaxy Z Fold 4 battery kit in local stock, weekday orders are dispatched the same day with tracked overnight courier delivery nationwide. Most orders land the next business day. In addition, buyers who want a fitted result can book in-house Samsung foldable battery replacement. Meanwhile, for complementary parts and tools, browse the Samsung parts and repair tools categories. For the original Samsung product specifications, see the Galaxy Z Fold 4 listing on GSMArena.
| Specification | Detail |
|---|---|
| Product type | Aftermarket replacement battery matched pair (zero cycle) |
| Compatible phones | Samsung Galaxy Z Fold 4 |
| Compatible model numbers | SM-F936B (Global 5G), SM-F936U (US 5G), SM-F936N (Korea 5G), SM-F936W (Canada 5G) |
| Upper battery part number | EB-BF936ABY |
| Upper battery capacity | 2060 mAh |
| Lower battery part number | EB-BF937ABY |
| Lower battery capacity | 2340 mAh |
| Combined capacity (marketed) | 4400 mAh |
| Combined watt-hours | 17.06 Wh |
| Rated voltage (each cell) | 3.88 V nominal |
| Charging cutoff voltage | 4.45 V |
| Battery chemistry | Lithium-ion polymer |
| Cycle count at delivery | Zero (factory-fresh) |
| Battery adhesive | Pre-installed on both cells |
| Rear panel adhesive included | No (sold separately for resealing the rear cover) |
| Compliance documents | Standard CE, FCC, UN38.3, MSDS, 1.2M drop test, and air transport documentation at supplier level |
| Warranty | 6 months against manufacturing defects |
| Return window | 7-day change-of-mind on unopened parts under GA Tech NZ T&C |
Specifically, this Samsung EB-BF936ABY / EB-BF937ABY replacement battery kit fits the following foldable and its regional SM-F variants.
Before ordering, to confirm your Samsung Galaxy model number, open Settings > About phone > Model number on your device. The SM-FXXX identifier should match one of those listed above.
The Samsung Galaxy foldable battery sits as two cells, one in each half of the chassis, each secured by adhesive and connected via flex cables to the logic board. Generally, a trained technician completes the full matched-pair swap in 60 to 90 minutes including rear cover removal and reseal. For buyers unfamiliar with Samsung foldable disassembly, GA Tech NZ offers in-house Samsung foldable battery replacement.
First, the supplier holds standard CE Declaration of Conformity (EU Council EMC Directive 2014/30/EU) and FCC Supplier’s Declaration of Conformity (FCC Part 15 Subpart B / ANSI C63.4:2014) for this battery line. In addition, the supplier holds standard lithium-battery transport and safety documentation, including UN38.3 test reports, MSDS, 1.2M drop test, and air transport identification under CNAS-accredited testing. As a result, the battery line ships with the compliance paperwork required for safe NZ courier transit.
Specifically, the Samsung EB-BF936ABY / EB-BF937ABY matched pair is rated at 2060 mAh upper + 2340 mAh lower = 4400 mAh combined, with 3.88 V nominal and 4.45 V charging cutoff. As a result, these numbers match the original Samsung split-pack specification, which is why runtime after installation tracks the factory experience closely.
Because Samsung foldables use a split-pack design with one cell in each half of the chassis, both halves must be replaced together as a matched pair to maintain even charge/discharge behaviour. Therefore, this listing ships both the upper EB-BF936ABY cell and the lower EB-BF937ABY cell in the same package as a complete kit. Replacing only one half leads to mismatched wear and accelerated degradation of the new cell.
Yes, indeed. Because both cells are zero-cycle and built to Samsung’s original capacity specification, a tired Samsung foldable typically returns to all-day standby and full-day mixed use after the swap. However, real-world runtime depends on screen brightness, mobile signal strength, hinge usage frequency, and background app activity.
Generally, a new Li-ion polymer cell retains 80 percent of its design capacity through approximately 500 full charge cycles. With normal daily use, that works out to roughly two to three years before the next noticeable degradation. Meanwhile, GA Tech NZ’s 6-month warranty covers any manufacturing defects in the first 6 months from delivery.
Specifically, this matched pair fits the Samsung Galaxy Z Fold 4. The full regional model identifier list is: SM-F936B (Global 5G), SM-F936U (US 5G), SM-F936N (Korea 5G), SM-F936W (Canada 5G). Therefore, confirm your model number in Settings > About phone > Model number before ordering.
No. The Z Fold 5 uses EB-BF946ABY / EB-BF947ABY and the Z Fold 3 uses EB-BF926ABY / EB-BF927ABY. The EB-BF936ABY / EB-BF937ABY matched pair fits the Z Fold 4 (SM-F936) only.
Yes. Both cells in this foldable matched pair ship with battery adhesive already attached to the chassis-facing side, so technicians do not need to source separate adhesive strips for the cell-to-chassis bond. Removal of the original cells is done with controlled heat and a non-marring spudger from the connector edge.
Yes, indeed. In fact, GA Tech NZ offers in-house Samsung foldable battery replacement. Generally, the full job takes 60 to 90 minutes in the workshop and includes a final test before handover. In addition, foldable repair is significantly more complex than standard candy-bar phone work, so professional fitting reduces the risk of display or hinge damage.
Generally, weekday orders placed before the dispatch cutoff are sent the same day with tracked overnight courier delivery nationwide. Urban delivery usually arrives the next business day, rural deliveries may take two business days or more.
First, GA Tech NZ provides a 6-month warranty against manufacturing defects on this Samsung Galaxy Z Fold 4 replacement battery matched pair. However, the warranty does not cover physical damage, installation errors, or water damage. In addition, GA Tech NZ accepts change-of-mind returns on unopened parts in new unused condition within 7 days of receipt under the GA Tech NZ terms and conditions.
If you have any requests or enquiries about a product not shown here, please fill the form and we will get back to you with price and availability.
