Best 4 V Batteries in 2026
Daisy
Last Updated: Feb 8, 2026
Daisy
Last Updated: Feb 8, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| QianYi-US | 9.92 | ✅ | ✅ | ✅ |
【Only Compatible with 3-Prong Connector】: Such as Eufy RoboVac 11, 11S, 11S MAX, 11S PLUS, 12, 15S, 15C, 15C MAX, 15T；Eufy RoboVac 25C, 25C MAX, 30, 30C, 30 MAX, 35C；Eufy RoboVac G10 Hybrid,G20, G30,G30 Edge, G30 Hybrid,G30 Verge；Ecovacs Deebot N79, N79S, 601/605, DN621,DN622, Ecovacs 500；Eufy RoboVac R500, R450；Tesvor X500, X500 Pro; Amarey A800 A900; Goovi D380 F007C; Onson J10C, iMartine C800; Shark RV750 RV720 RV700; Coredy R500+ R550 R300 R650 R3500 R3500S R600 R580; Cecotec CONGA EXCELLENCE 990, CONGA 950, CONGA 1090.
【14.4V 2.8Ah Premium Battery】: can be used for up to 500 cycles, lasting 120 - 180 mins per charge. The specific time varies according to machine model and age, most of which last for 2 hours.
【Built-in Protection, Safe Charge】: Fully charged about 5-6 hours. Reliable safeguard features with build in protection for short circuit, output over voltage, overheat and output overcurrent. Not hot when charge, makes your RoboVac run longer and durable.
【Easy to Install】: Install it in 2 minutes - just remove the two screws on the bottom, remove the battery connector and connect the new one, then revive your robot again.
【Not for 2-Prong Connector】: The item is of 3 prong connector, NOT the 2 prong one. Please make sure your original battery is of the 3 prong connector before purchase.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Battery Feature】2200mAh | 7.4 V | Premium Lithium-ion no memory effects. Via CE, FCC, PSE, ROHS Safety certified. Higher capacity recording more wonderful moments, is a professional replacement for BP-511 BP-511A Battery.
【Wide compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Canon EOS 50D, 40D, 30D, 20D, 20Da, 10D, 5D, Digital Rebel 1D, D60, 300D, D30, Kiss PowershotG1, G2, G3, G5, G6, Pro 1,Pro90, Pro 90IS.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Versatile Charging Option】Common Micro-USB cable and Type-C port input can charge wherever there is a USB jack or Type-C cable by just connecting with your laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Be multi-certified, tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection can help to avoid security problem effectively, protect the camera and your safe.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Powerful Battery】1600mAh | 7.4 V | Premium Lithium-ion no memory effects. Via CE, FCC, PSE safety certified. Higher capacity recording more wonderful moments, is a professional replacement for Panasonic DMW-BLC12, DMW-BLC12E, DMW-BLC12PP battery.
【Wide Compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Panasonic Lumix DMC-G7, DMC-G85, DC-G95,DMC-FZ2500, DMC-GX8, DMC-G6K, DMC-GH2, DMC-G5, DMC-FZ200, DMC-G6K, DMC-GH2, DMC-G5, DMC-FZ300, DMC-FZ1000, DC-FZ1000 II cameras.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Flexible Charging】Common Micro-USB & Type-C input makes the charger possible to be powered up by any USB 5V output, like laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Battery Feature】2300mAh | 7.4 V | Premium Lithium-ion no memory effects. Via CE, FCC, PSE Safety certified. Higher capacity recording more wonderful moments, is a professional replacement for Nikon EN-EL15, EN-EL15a, EN-EL15b, EN-EL15c Battery.
【Wide Compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Nikon D500, D600, D610, D750, D800, D800e, D810, D810a, D850, D7000, D7100, D7200, D7500, Z5, Z6, Z6 II, Z7, Z7 II, 1V1 cameras, Nikon MH-25 MH-25a charger and more.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Flexible Charging】Common Micro-USB & Type-C input makes the charger possible to be powered up by any USB 5V output, like laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.94 | ✅ | ✅ | ✅ |
【Battery Feature】1900mAh x2 | 7.4 V | Premium Lithium-ion without memory effect. Higher capacity to help you record more exciting moments, is a professional replacement for Canon LP-E8 battery.
【Wide Compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Canon EOS Rebel T2i, T3i, T4i, T5i, EOS 550D, 600D, 650D, 700D, Kiss X4, Kiss X5, Kiss X6 digital cameras.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Flexible Charging】Common Micro-USB & Type-C input makes the charger possible to be powered up by any USB 5V output, like laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.94 | ✅ | ✅ | ✅ |
【Upgraded 5000mAh, More Duration】: Run 35-40mins (normal mode); ≈8 mins(max mode). Longer running time than others 5.0Ah/6.0Ah. Same Size, features, running time & quality as original V8 battery. You don't need to worry.
【Work Same as Original V8 Battery】：5.0Ah / Lithium-ion / 21.6V. Fit for original charger station & wall charger. Fully charge about 4hrs.
【Compatible with All V8 Series】: Vacuum Cleaner - V8 Animal, V8 Absolute, V8 Fluffy, V8 Motorhead, V8 Carbon Fiber vacuum. (ONLY for V8, NOT for v6, v7).
【Easy to Install & Safe Charge】: Took about 2mins to replace. Protect against overcharge, over discharge, over current, short circuit. Built-in multiple protection can help to lengthen battery life, protect your vacuum.
【Include & Note】: 1* V8 replacement battery, 1* battery cover. NOTE: Cool down the battery before recharge it. 24hrs service: If have any question, please feel free to contact us.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Battery Feature】2200mAh | 7.4 V | Premium Lithium-ion no memory effects. Via CE, FCC, PSE, ROHS Safety certified. Higher capacity recording more wonderful moments, is a professional replacement for Nikon EN-EL3e Battery.
【Wide compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Nikon D70 D80 D90 D100 D200 D300 D700 digital SLR cameras and more.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Versatile Charging Option】Common Micro-USB cable and Type-C port input can charge wherever there is a USB jack or Type-C cable by just connecting with your laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Be multi-certified, tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection can help to avoid security problem effectively, protect the camera and your safe.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Powerful Battery】1500mAh | 7.4 V | Premium Li-ion no memory effects. Via CE, FCC, PSE Safety certified, the size & function same as the original. Replacement Nikon EN-EL14/EN-EL14a battery will extend the runtime of your camera and help you record more exciting moments.
【Wide Compatibility】Fully Decoded battery works with these popular Nikon models that use EN EL14 & EL14a batteries: D3100 / D3200 / D3300 / D3400 / D3500 / D5100 / D5200 / D5300 / D5500 / D5600 / DF / Coolpix P7000 / P7100 / P7700 / P7800 and more.
【Convenient Charging】Dual slot charger can charge 2 batteries simultaneously, and each charging slot works independently. Micro USB & Type-C port input (5V/2.1A), can charge wherever there is a USB jack by connecting with wall charger, car adapter, power bank etc. Ideal for travel, camping, other outdoor/indoor activities.
【Safety & Reliable】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
【Package Includes】2 x FirstPower EN-EL14 EN-EL14a batteries, 1 x USB dual slot charger, 1 x Micro-USB cable and 1 x Cleaning cloth.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Battery Feature】2000mAh | 7.4 V | Premium Lithium-ion no memory effects. Via CE/FCC/ROHS Safety certified. Higher capacity recording more wonderful moments, is a professional replacement for Nikon EN-EL9 Battery.
【Wide compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Nikon D40 D40x D60 D3000 D5000 digital SLR cameras and more.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Versatile Charging Option】Common Micro-USB cable and Type-C port input can charge wherever there is a USB jack or Type-C cable by just connecting with your laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Be multi-certified, tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection can help to avoid security problem effectively, protect the camera and your safe.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.94 | ✅ | ✅ | ✅ |
【Quality Battery Pack】1900mAh x2 | 7.4 V | Premium Lithium-ion without memory effect. Higher capacity to help you record more exciting moments, is a professional replacement for Canon LP-E5 battery.
【Wide compatibility】Professional replacement LP-E5 battery, the size & function same as the original. Fully compatible with Canon EOS Rebel XS, Rebel T1i, Rebel XSi, 1000D, 500D, 450D, Kiss X3, Kiss X2, Kiss F digital camera.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Convenient Charging 】Common Micro-USB and Type-C port input allow you to charge on the go, just connect with your laptop, car adapter, power bank and any USB power source. Gives you more options than a standard battery charger.
【Safety and Reliable】Built-in multiple protection (over-charging, short-circuit, high-temperature, and surge protection) and fire-resistant construction, can help to avoid security problem effectively, protect the camera and your safe.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.94 | ✅ | ✅ | ✅ |
【Battery Feature】1300mAh x2 | 3.7 V | Premium Lithium-ion without memory effect. Higher capacity to help you record more exciting moments, is a professional replacement for Fujifilm NP-45/NP-45a/NP-45s battery.
【Wide compatibility】Replacement Battery, the size & function same as the original. Fully compatible with Fujifilm INSTAX Mini 90 Fujifilm FinePix XP140 XP130 XP120 XP90 XP80 XP70 XP60 XP50 XP30 XP20 T560 T550 T510 T500 T400 T360 and more.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Versatile Charging Option】Common Micro-USB cable and Type-C port input can charge wherever there is a USB jack or Type-C cable by just connecting with your laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Be multi-certified, tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection can help to avoid security problem effectively, protect the camera and your safe.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.93 | ✅ | ✅ | ✅ |
【Powerful Battery】7.4 V | 8900mAh x2 | Premium Li-Ion battery are professional replacements for Sony NP-F970 battery. Ultra-high capacity can provide enough powers to the flash light or shoot devices when traveling, helping you capture every beautiful moment.
【Diverse Compatibility】Replacement for Sony NP-F960 F950 F930 F750 F550 F330 batteries, work with Sony DCR-VX2100, DSR-PD150, DSR-PD170, FDR-AX1, HDR-AX2000, HDR-FX1, HDR-FX7, HDR-FX1000, HVL-LBPB, HVR-HD1000U, HVR-V1U, HVR-Z1P, HVR-Z1U, HXR-MC2000U, MVC-FDR1, NEX-EA50UH, NEX-FS100U, NEX-FS700U Handycam Camcorder.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Flexible Charging】Common Micro-USB & Type-C input makes the charger possible to be powered up by any USB 5V output, like laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.94 | ✅ | ✅ | ✅ |
【Powerful Battery】1450mAh | 7.4 V | Lithium-ion. Upgraded backup battery double the camera runtime and help you record more wonderful moments, is a professional replacement for LP-E17 Battery.
【Standard Compatibility】Replacement LP-E17 battery charger set fully compatible with Canon EOS RP, Rebel SL2, SL3, T6i, T6s, T7i, T8i, 77D, 750D, 760D, 8000D, KISS X8i camera and more (For M3, M5, M6 serires, it will not display battery life)
【Smart LED Dual Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED means charging, GREEN means full charge or no battery inserted. Dual USB charger can charge two batteries simultaneously by Micro-USB / Type-C input, effectively saving charging time.
【100% Safety】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
【Package Includes】2 x LP-E17 replacment batteries, 1 x USB dual battery charger, 1 x micro USB cable, 1 x cleaning cloth and friendly customer service.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FirstPower | 9.94 | ✅ | ✅ | ✅ |
【Quality Battery】7.4V/1500mAh premium lithium-ion battery with upgraded fully decoded chip, works just like the original, specially designed for your Fujifilm digital camera. It is a professional substitute for Fuji NP-W126/W126s battery.
【Wide Compatibility】NP-W126/W126s battery fully compatible with Fuji X100f, X100V, X-A1, X-A2, X-A3, X-A5, X-A7, X-A10, X-A20, X-E1, X-E2, X-E2S, X-E3, X-Pro1, X-Pro2, X-Pro3, X-T1, X-T2, X-T10, X-T20, X-T30, X-T30 II, X-T100, X-T200, X-H1, X-M1, FinePix HS30EXR, HS33EXR, HS35EXR, HS50EXR.
【Intelligent LED Charger】Built-in LED indicator shows the charging status of each battery intuitively. RED light means charging, GREEN light means full charge or no battery inserted. Dual charger can charge two batteries simultaneously, effectively saving charging time.
【Flexible Charging】Common Micro-USB & Type-C input makes the charger possible to be powered up by any USB 5V output, like laptop, car adapter, power bank etc. Gives you more options than a standard battery charger.
【Safety and Reliable】Tested and validated by manufacturer to match specifications of OEM products. Built-in multiple protection (short-circuit, over-charge, over-voltage, over-current , high-temperature) can help to avoid security problem effectively.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Firstpower | 14 |
We've carried out a comprehensive analysis of 9,553 reviews on batteries, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select batteries priced around $27.63, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 14 batteries for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right batteries Products based on their needs, saving them considerable time when choosing which batteries to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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