In brief: Based on review measurements: Capacity: Sony NP-BN1 (502 mAh vs. 497); Price: 1200mAh Li-40B/42B (2.82 $ vs. 13.89).
Model 1200mAh Li-40B/42B 2015 Read review → Sony NP-BN1 2015 Read review → Capacity, mAh 497 502 Price, $ 2.82 13.89 Review conclusion With reservations Recommended
1200mAh Li-40B/42B: Measured capacity was 497 mAh versus 740 mAh for the original—about two-thirds.
Sony NP-BN1: Capacity was 502 mAh versus 600 mAh for the original; the author considers this a normal result.
Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.
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18650 1800mAh JGNE 26650 2300mah JGNE 26650 3000mah JGNE 26650 3600mah JSK 32140 15Ah Kindle PaperWhite EY21 battery Leagoo M5 battery LG-INR21700H40B LG 20650 HG6 LGDBHE41865 (HE4) LGDBHG21865 LG HG2 LG HG2 LG HG2 (genuine) LG HG2 (reviewed) LG ICR18650-HB3 LG ICR18650-HB3 LG ICR18650-HE2 2500mAh LG ICR18650-HE4 LG ICR18650-HE4 LG INR18650-HG2 LG INR18650-HG2 LG INR18650-HG2L LG INR18650-HG2L LG INR18650-M36 LG INR18650-M36 LG INR18650-MH1 LG INR18650-MJ1 LG INR18650-MJ1 LG INR18650-MJ1 LG INR18650MH1 LG INR21700-M50LT LG INR21700-M50T LG INR21700-M50T Li-40B Li-NMC 26800 Yuliang 3.7 V 7000mAh LiFePO4 EVE Energy 3.2V 90Ah LiitoKala 30 Ah LiFePO4 battery Liitokala 3400 mAh with protection LiitoKala 26650-55A Liitokala 32700 LiFePO4 Liitokala HG2 Liitokala LiFePO4 32 Ah LiitoKala lii-35A-N LiitoKala Lii-40A 21700 4000mAh LiitoKala Lii-40E, 26700, 4000 mAh LiitoKala Lii-50A LiitoKala Lii-50A Liitokala Lii-51S Liitokala NCR18650B 3400 mAh Liitokala NCR18650B protected battery LP402245-PCM-LD MecArmy U18-34 Molicel INR18650-P28A Molicel INR21700-P42A Molicel INR21700-P45B Murata US18650-VTC5D Murata US18650VC7 Murata US18650VTC4 Murata US18650VTC5A Murata US18650VTC5D Murata US18650VTC6 Murata US18650VTC6 (red) Murata US18650VTC6 Red Murata VTC5A Murata VTC6 NB-4L NB-7L NCR18500A NCR18650B NCR18650B 3400 mAh NCR18650GA Netac P500 64GB Micro SD Night wolf No-name 18650 batteries, 2600 mAh Noname 5000mAh NP-BN1 Panasonic NCR18650BD Panasonic NCR18650BD Panasonic NCR18650B with protection Panasonic NCR18650G Panasonic NCR18650G PIPO X10 battery QNAS 32140 15Ah QNAS 40160 25Ah 3.2V LFP Reliance INR21700-RS50 Samsung ICR18650-22P Samsung ICR18650-22P Samsung ICR18650-22P Samsung ICR18650-22P (genuine, comparison) Samsung ICR18650-26F Samsung ICR18650-26H Samsung ICR18650-26H Samsung ICR18650-26HM Samsung ICR18650-32A Samsung ICR18650-32A with protection Samsung INR18650-15M Samsung INR 18650-20S Samsung INR18650-20S Samsung INR18650-25R Samsung INR18650-25R 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TrustFire 18650 2400mAh TrustFire TF 16340 880 mAh TrustFire TF26650 5000mAh 3.7V UltraFire TR17670 1800mAh 3.7V Unbranded 32 GB microSD card UR16650ZTA US18650VTC4 US18650VTC4 US18650VTC6 Vapcell 14650 V11 1100mah 6A Vapcell A11 18350 1100mAh Vapcell Boston Power Swing 5300 Vapcell F14 Vapcell F32 18650 Vapcell F34 18650 Vapcell F35 Vapcell F35 18650 3500mah 10A Vapcell F52 Vapcell F56 VapCell G45 21700 4500mah 20A Vapcell G50 21700 5000mah 15A VapCell G53 26650 5300mah 20A Vapcell G62 IFR32700 VapCell IFR10370 140mAh VapCell IFR26650 2600mah 3.2V 55A/75A Vapcell IFR32700 G62 VapCell IFR32700 G65 VapCell INR14500 1000mah 10A H10 VapCell INR18500 2200mah 4A L22 Vapcell INR18650 2000mAh 38A Vapcell INR18650 3000mah 20A VapCell INR26350 A20 2000mAh VapCell INR26650 4200mah 32A Vapcell K15 18500 1500mAh Vapcell K25 18650 2500mah 20A Vapcell K29 18650 Vapcell K30 18650 3000mah 15A Vapcell K31 18650 Vapcell K40 21700 4000mAh Vapcell K54 VapCell M11 INR18350 1100mah 9A Vapcell N36 Vapcell N40 Vapcell N40 18650 Vapcell N1830A 18650 3000 mAh 15 A Vapcell N1835A 18650 3500 mAh 10 A Vapcell P30 Vapcell P50 21700 Vapcell P1418 14500 1800mah 1.5v Vapcell P1608A 16340 800mah Vapcell P1830A 18650 3000 mAh 15 A Vapcell P1835A 18650 3500mah 10A Vapcell P2150A 21700 5000mAh Vapcell S30 18650 3000mah 25A Vapcell T8 INR16340 850mah 3A Vapcell T20 21700 Vapcell T39 21700 Vapcell T42 21700 Vapcell T50 VariCore 32700 LiFePo4 Vernee Thor battery VTC6 with tabs Westinghouse WA640N-F1 XG NCR21700 4800mAh Xiaomi ZI5 Compare
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1200mAh Li-40B/42B2015Read review →