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boAt · Power Banks
boAt Energyshroom PB400 20000 mAh Power Bank
20000 mAh Capacity22.5W Fast Charging12-Layer Safety
Buy at the best price
- FlipkartBest Price26% cheaper₹1,399Buy
In stock · MRP ₹4,499 · Last checked 20 hours ago
- Amazon₹1,899Buy
In stock · Last checked just now
Flipkart advertises a headline price with bank offers. The true cash price without card EMI is shown above.
Rating
PricePe rating
Buy82/100
Excellent
Solid 20000mAh capacity with 22.5W fast charging at a great price.
Verdict Buy · Scored 21 Oct 2026 · Based on listed specifications and today's cash price
Score breakdown
- Performance
- 84
- Portability
- 78
- Build Quality
- 80
- Value for Money
- 88
At this price point, getting a reliable 20000 mAh capacity with 22.5W fast charging and multiple output ports is a very safe deal.
Should you buy this?
- Buy it if
- You frequently travel or experience power outages and need a reliable, high-capacity power bank that can easily recharge your smartphone, tablet, or wireless earbuds multiple times without needing a wall socket. You want support for fast charging standards like Power Delivery and Quick Charge to quickly top up your compatible mobile devices while on the move without waiting around for hours.
- Skip it if
- You are looking for a lightweight, ultra-slim power bank that easily slips into a tight pocket for everyday minimal carry, as this 20000 mAh model has some noticeable heft to it. You intend to primarily charge your power-hungry laptop, since the 22.5W maximum output is insufficient for powering laptops efficiently under heavy workloads.
Scored 21 Oct 2026 · Verify specifications and price on the store before buying.
Primary advantages
(3)- Large 20000 mAh capacity can charge standard smartphones multiple times on a single charge.
- Supports 22.5W fast charging with Power Delivery and Quick Charge 3.0 protocols.
- Comes with 3 output ports including Type-A and Type-C for charging multiple devices simultaneously.
Primary weaknesses
(3)- Sleek aluminum body makes it a bit heavy and not truly pocket-sized for daily lightweight carry.
- Though it lists laptop support, 22.5W output is too low for fast-charging most modern laptops effectively.
- Bulkier form factor compared to lower capacity 10000 mAh variants.
Will you regret buying it?
- Performance
- Low risk
- Portability
- Low risk
- Build Quality
- Low risk
- Value for Money
- Low risk
Overall regret risk: Low risk. Each area is banded from its own score, so the rows above mirror the breakdown.
Price History
90-Day Price History
1 Check Logged· Last checked 20 hours ago
Flipkart 90-Day Price TrendLowest: ₹1,399
Tracking started on 20 Oct at ₹1,399. The trend line charts automatically as visitors re-check this product every 24 hours.
Today: ₹1,399Baseline recorded
Tracked from Flipkart — not Amazon.Last checked 20 hours ago
Specifications
Key specs
5 sectionsPower & Battery
- 20000 mAh
- Never run out of battery
- Battery Type
- Lithium Polymer
- Output Power
- 22.5
- Power Source
- Battery
- Charging Type
- Fast Charging, Quick Charge 3.0, Power Delivery 3.0
How this rating was made
The score comes from one evaluation of the Flipkart specification table against today's cash price, calibrated so most consumer electronics land between 65 and 88. Affiliate partnerships never change a score, and no brand pays for placement. Where the store withholds a specification, the model is told to treat it as unknown rather than assume a good value.
Generated from real fetched data · Last checked 21 Oct 2026 · Price history is Flipkart only
Verdict ready: buy, 82 out of 100.