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The Galaxy S3 is a 2012-era phone and the real extended-battery market has largely disappeared. Only the first two are verified extended packs; the remainder are labelled standard-capacity replacement near-misses for the removable-battery Galaxy S3 family. Match the exact model printed under the battery: GT-I9300, I9305 and carrier variants can share part-number families, but a claim of compatibility must come from the listing. Do not use swollen cells, unusually high unverified capacity claims, or a pack that requires an unverified back cover.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Mugen Power HLI-I9300XL 4600mAh Extended Battery | $40-$70 | Amazon · eBay |
| 2 | ZeroLemon 7000mAh Galaxy S3 Extended Battery | $30-$70 | Amazon |
| 3 | Samsung EB-L1G6LLU 2100mAh Battery | $8-$20 | Amazon · eBay |
| 4 | Samsung EB-L1G6LLA 2100mAh Battery | $10-$25 | Amazon · eBay |
| 5 | Cameron Sino CS-SMI930SL Battery | $15-$25 | Amazon · eBay |
| 6 | iDemiGods S3_BTTRY Replacement Battery | $8-$15 | Amazon |
| 7 | Polar Tech EB-L1G6LLU Galaxy S3 Battery | $10-$20 | Amazon |
| 8 | FixShop EB-L1G6LLU 2100mAh Aftermarket Battery | $8-$15 | Amazon · eBay |
| 9 | LCDPartner EB-L1G6LLU i9300 Replacement Battery | $8-$15 | Amazon · eBay |
The picks, in detail
Mugen Power HLI-I9300XL 4600mAh Extended Battery
A verified legacy 4,600mAh extended pack specifically identified for the Galaxy S3 i9300.
- 4,600mAh claim
- Galaxy S3 i9300 model
- extended replacement format
- real named extended-battery model
- capacity claim is published
- legacy product; current stock must be assessed carefully
ZeroLemon 7000mAh Galaxy S3 Extended Battery
A verified legacy 7,000mAh Galaxy S3 extended-battery package that includes an enlarged protective back case.
- 7,000mAh claim
- Galaxy S3 extended format
- included TPU case in published review
- genuinely higher-capacity legacy option
- case accommodates added thickness
- old product; do not assume newly made stock
Samsung EB-L1G6LLU 2100mAh Battery
A standard-capacity near-miss replacement for the GT-I9300 rather than an extended battery.
- 2,100mAh capacity
- GT-I9300 compatibility listing
- removable Li-ion format
- normal-size replacement
- current parts listings exist
- not extended capacity
Samsung EB-L1G6LLA 2100mAh Battery
A standard-capacity OEM-code family replacement for Galaxy S3 variants, including i9300 listings.
- 2,100mAh capacity
- EB-L1G6LLA OEM code
- Galaxy S3 family listing
- published carrier-variant cross-references
- normal back-cover fit
- not extended capacity
Cameron Sino CS-SMI930SL Battery
A standard-capacity near-miss replacement listed for T-Mobile Galaxy S3 models and OEM part-number equivalents.
- CS-SMI930SL model
- EB-L1G6LLU replacement list
- carrier-model compatibility listing
- named third-party SKU
- current specialist listing
- check carrier variant, not just S3 name
iDemiGods S3_BTTRY Replacement Battery
A standard 2,100mAh near-miss pack listed for i9300, i9305 and several US carrier Galaxy S3 variants.
- 2,100mAh capacity
- S3_BTTRY model
- multiple published variant fits
- tools included by listing
- broad published cross-reference
- not an extended pack
Polar Tech EB-L1G6LLU Galaxy S3 Battery
A standard 2,100mAh i9300 replacement listing, clearly a normal-capacity near-miss.
- EB-L1G6LLU code
- 2,100mAh claim
- GT-I9300 compatibility
- current parts-store listing
- specific model callout
- not extended capacity
FixShop EB-L1G6LLU 2100mAh Aftermarket Battery
A standard-capacity aftermarket i9300 battery listed under the EB-L1G6LLU code.
- 2,100mAh claim
- aftermarket replacement
- i9300 listing
- explicit i9300 application
- normal-size pack
- not extended capacity
LCDPartner EB-L1G6LLU i9300 Replacement Battery
A standard-capacity near-miss battery listed specifically as suitable for the Galaxy S3 i9300.
- EB-L1G6LLU code
- i9300-specific listing
- replacement-grade part
- specific model listing
- current preorder availability
- not extended capacity
Buying tips
- Remove the original battery and match its full code and the phone’s exact model; Galaxy S3 branding alone is not enough.
- An extended pack changes thickness and generally needs its own specified back cover; do not force a stock cover over it.
- Retire any cell that swells, heats abnormally or has damaged contacts, and avoid listings making extreme capacity claims without a credible maker and fitment.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.