Is the Eveready Ultima Power Bank PB 21 a good buy? For people who want a 20,000 mAh power bank with both a USB-C and a USB-A output, Quick Charge and Power Delivery support, and a cable in the box, it covers the basics well. Its Amazon.in listing rates it at 22.5W fast charging. The main reasons to hesitate are its weight of 321 g, a lack of detailed per-port specifications from Eveready, and some inconsistent colour and port information between sources.
The affiliate link on this page goes to the Amazon.in listing titled “Eveready Ultima Power Bank PB 21, 20,000mAh, 22.5W Fast Charging, Dual Output, USB-C & USB-A … Grey” (ASIN B0F6CRYD5T). Eveready’s official PB 21 page links to this same listing.
How we wrote this: the review is based on Eveready’s official PB 21 product page and the Amazon.in listing data, both checked on 17 October 2026. We did not test the product, and we could not find an independent review, so there are no measured capacity or charging-time results in this article.
Quick verdict
- Best for: charging a phone and a second device such as earbuds or an older USB-A gadget, during travel or power cuts
- Skip if: you want wireless charging, laptop charging, or the lightest possible 20,000 mAh bank
- Key strengths: 20,000 mAh, USB-C and USB-A outputs, QC and PD, cable included, BIS certification, made in India, 1-year warranty on the listing
- Key limitations: 321 g, per-port wattage and recharge time not published, unclear colour and port count across sources
Eveready Ultima PB 21 key specifications
| Specification | Eveready Ultima PB 21 | Where it comes from |
|---|---|---|
| Capacity | 20,000 mAh | Eveready page and Amazon.in listing |
| Fast charging | 22.5W | Amazon.in listing |
| Protocols | Quick Charge (QC) and Power Delivery (PD) | Eveready page and listing |
| Outputs | Dual output, USB-C and USB-A | Eveready page and listing title |
| Number of ports | 3 | Amazon.in technical details |
| In the box | Cable included | Eveready page and listing title |
| Protection | Overcharging, overvoltage and overload at output | Eveready page and listing |
| Certification | BIS | Eveready page and listing |
| Weight | 321 g | Amazon.in listing |
| Dimensions | 7 x 2.6 x 10.9 cm | Amazon.in listing |
| Colour | Grey in listing title, Silver in listing details, Black on Eveready page | Both, inconsistent |
| Model | PB21 | Eveready page and listing |
| Country of origin | India | Amazon.in listing |
| Warranty | 1 year (Eveready page says warranty is included, no duration) | Amazon.in listing |
Check the current price of the Eveready Ultima PB 21 (20,000 mAh) on Amazon.in
Three details the sources disagree on
Small inconsistencies are common on accessory listings, but they matter when you are trying to buy the right thing. Here is what we found on 17 October 2026.
- Colour: the Amazon.in title says Grey, the listing’s technical details say Silver, and Eveready’s own page title says Black. Look at the listing photos and the colour selector before ordering, and do not assume the colour you see on Eveready’s site is what this ASIN ships
- Port count: Eveready and the listing title describe dual output with USB-C and USB-A, while the technical details say three ports. The third may be an input port, but neither source explains it, so check the product images for the port layout
- Qi mention: both describe the PB 21 as compatible with “iPhone, Android and Qi devices”. Qi is a wireless charging standard, yet neither source says the PB 21 has a wireless charging pad. Do not buy it expecting wireless charging
Ports and charging speed explained
Having one USB-C and one USB-A output is practical. USB-C covers modern Android phones, recent iPhones with the right cable, and most new earbuds, while USB-A still helps with older cables, fitness bands, Bluetooth speakers and other gadgets that came with USB-A leads. Eveready says it can charge multiple devices simultaneously.
Eveready’s page says the PB 21 supports Quick Charge (QC) and Power Delivery (PD). PD is the standard used by iPhones, many Samsung and Pixel phones and most USB-C devices, while QC is common on many Android phones. Eveready’s description specifically mentions compatibility with iPhone 12 and newer models.
The listing’s 22.5W figure is a headline maximum. Neither source states which port reaches it, how much each port delivers, or what happens when both are in use. When two devices charge together, many power banks share their output and drop out of fast-charging modes, so expect slower speeds when the second port is busy. Your phone’s own fast-charging limit also caps the speed: a phone that tops out at 18W or 20W will not charge faster because the bank is rated higher.
Capacity: what 20,000 mAh means for your devices
Power bank capacity is rated at the internal cell voltage, but your phone is charged at a higher USB voltage, and some energy is lost as heat along the way. That is why no power bank delivers its full printed capacity to a phone. Eveready does not publish a rated output capacity for the PB 21.
As a rough guide only, a 20,000 mAh bank usually gives a typical 5,000 mAh phone about two to three full charges. That makes it a good fit for long train journeys, weddings and festivals where sockets are scarce, or days with long power cuts. It is less suited to laptops: neither source mentions laptop charging, and 22.5W is low for running most notebooks.
Size and weight
According to the listing, the PB 21 weighs 321 g and measures 7 x 2.6 x 10.9 cm. The footprint is fairly compact for 20,000 mAh, which matches Eveready’s “Compact” sub-category for the model, but the weight is noticeable. For comparison, the listing for Eveready’s PB11, another 20,000 mAh model with built-in cables, gives 257 g. If weight matters for daily carry, a 10,000 mAh bank may suit you better.
Safety, certification and care
Eveready says the PB 21 is BIS certified and includes protection against overcharging and against overvoltage and overload at the output. In India, look for the BIS registration mark on the label when it arrives.
Simple habits keep any lithium power bank healthy and safe: do not leave it in a hot car or direct sun, avoid charging it on a bed or under a pillow, use a decent charger and cable to recharge it, and stop using it immediately if it swells, smells odd or gets unusually hot. For long storage, keep it partly charged rather than empty.
For flights, power banks normally have to go in cabin baggage, not checked bags, and airlines cap capacity by watt-hours. Check the Wh rating on the PB 21’s label and your airline’s current rules, as some carriers also restrict using power banks on board.
PB 21 or PB11: which Eveready 20,000 mAh model?
Eveready sells two 20,000 mAh Ultima models on Amazon.in that look similar on paper. Both have QC and PD, BIS certification, 22.5W on their listings and a 1-year listed warranty. The difference is how you connect.
| Point | Eveready Ultima PB 21 | Eveready Ultima PB11 |
|---|---|---|
| Cables | Separate cable included | Built-in cables |
| Outputs | USB-C and USB-A | Type-C input and output, 3 ports on listing |
| Weight (listing) | 321 g | 257 g |
| Battery indicator | Not stated | Digital percentage indicator |
Choose the PB 21 if you prefer standard ports and replaceable cables. Choose the PB11 if you never want to forget a cable and like a percentage display.
Who should buy it, and who should not
- Buy it if: you charge a USB-C phone plus an older USB-A gadget and want one bank for both
- Buy it if: you want a cable in the box and a recognisable Indian brand with BIS certification
- Skip it if: you want wireless or MagSafe-style charging
- Skip it if: you need laptop charging or detailed, published per-port specifications
- Skip it if: weight is your top priority for pocket carry
Alternatives worth comparing
- Eveready Ultima PB11: 20,000 mAh with built-in cables, QC and PD, and a digital battery indicator, per Eveready and its listing
- Eveready Ultima PB 20: 10,000 mAh with USB-C and USB-A outputs and QC and PD, per Eveready, for lighter carry
- Eveready PB31: a 10,000 mAh MagSafe-compatible power bank with wireless charging, per Eveready, if wireless is what you actually want
- Ambrane PowerlitDuo 30: a 20,000 mAh, 33W power bank covered in our Ambrane PowerlitDuo 30 review, if you need more wattage
If you are unsure how much capacity or wattage you need, our power bank and charger buying guide for India walks through it.
Before you order: a quick checklist
- Colour: confirm the colour shown in the listing photos, since sources say Grey, Silver and Black
- Model: check that the title and details say PB 21 or PB21, not PB 20 or PB11
- Port layout: look at the images to confirm the USB-C and USB-A positions and the input port
- Recharging: neither source mentions a wall adapter in the box, so plan to use a USB charger you already own
- Warranty: the listing says 1 year, so keep your invoice and note the seller
- On arrival: check the label for the model, 20,000 mAh rating and BIS mark
See the Eveready Ultima PB 21 listing on Amazon.in and confirm the colour and seller before you buy.
Frequently asked questions
Does the Eveready PB 21 support wireless charging?
Neither Eveready’s page nor the Amazon.in listing says it has wireless charging, even though both mention compatibility with “Qi devices”. It charges devices by cable through its USB-C and USB-A outputs.
Is a cable included with the PB 21?
Yes. Eveready’s page and the listing title both say a cable is included. The type of cable is not specified in text, so check the box contents shown on the listing.
How fast does the PB 21 charge an iPhone?
Eveready says it supports Power Delivery, which iPhones use, and mentions compatibility with iPhone 12 and newer. The listing’s maximum is 22.5W, but Eveready does not state the PD wattage on each port, so the exact speed is not published.
Can I charge two devices at once?
Yes. Eveready says it supports multiple devices simultaneously through its USB-C and USB-A outputs. Expect each device to charge more slowly when both ports are in use.
What is the warranty on the Eveready PB 21?
The Amazon.in listing states a 1-year warranty. Eveready’s page confirms a warranty is included but does not give the duration.
Final verdict
The Eveready Ultima PB 21 is a straightforward 20,000 mAh power bank with USB-C and USB-A outputs, QC and PD support, a cable in the box and BIS certification. It is not light, it has no wireless charging despite the Qi mention, and its colour and port details are inconsistent across sources, so check the listing carefully. If those points do not bother you, check the Eveready Ultima PB 21 on Amazon.in for the current price.
Related reading on GadgetSoch: GM G+ DisplayPulse 100W Review: GaN Charger With a Live Wattage Display and APFEN 25W Type-C Charger (APF-25) Review: What the Listing Claims and What to Check.
Sources
- Eveready India: Ultima Power Bank PB 21 product page (20,000 mAh, USB-C and USB-A dual output, QC and PD, BIS, protections, cable included, iPhone 12 and newer compatibility, Black colour in title), checked 17 October 2026
- Amazon.in listing for ASIN B0F6CRYD5T (title, 22.5W, port count, weight, dimensions, colour, warranty, country of origin), captured 17 October 2026
- Eveready India: Power Bank PB11 page, checked 17 October 2026
- Eveready India: mobile accessories range (PB20 and PB31), checked 17 October 2026
