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Amazon delivered a strong August opportunity on the VTOMAN FlashSpeed 1500 Extra Battery, a 1548Wh LiFePO4 expansion battery designed for the FlashSpeed 1500 portable power station.
The initial Amazon drop brought the battery down to £299.99 on 11 August 2026. However, the real opportunity came from an additional voucher that reduced the effective checkout price even further to just £149.99.
House of Resell highlighted the deal with an estimated resale value of £300+. For members who successfully applied the voucher, that created potential gross profit of more than £150 per unit before selling fees and other costs.
Another unusual feature was the length of the buying window. The £299.99 Amazon price remained available from 11 August at 06:11 until 24 August at 07:44, giving buyers considerably more time than a typical short-lived Amazon price drop.
Amazon reduced the VTOMAN FlashSpeed 1500 Extra Battery to £299.99 on 11 August, creating the initial buying opportunity.
An additional voucher reduced the effective checkout price by another £150 to just £149.99.
House of Resell estimated resale at £300+, leaving more than £150 potential gross profit before fees.
The £299.99 Amazon drop remained available until 24 August, giving buyers an unusually long window compared with most Amazon deals.
11/08/2026
06:11 - Amazon reduced the VTOMAN FlashSpeed 1500 Extra Battery to £299.99, substantially below its previous pricing.

11/08/2026
An additional voucher reduced the effective purchase price by £150, allowing eligible buyers to secure the battery for just £149.99.
23/08/2026
The £299.99 Amazon price was still available almost two weeks after the initial drop, extending the opportunity well beyond a typical price-error window.
24/08/2026
07:44 - The £299.99 price finally ended after almost 13 days, closing the extended August buying opportunity.

▶️ DealVerdict Deal Page
▶️ VTOMAN Official Website
▶️ eBay Sold Listing
The VTOMAN FlashSpeed 1500 Extra Battery was a much stronger opportunity than the Amazon price history alone initially suggested.
The visible Amazon drop was £299.99, but the key was the additional voucher. Once applied, buyers could bring their effective purchase price down to £149.99, effectively taking another £150 off an already heavily discounted product.
Against House of Resell's £300+ resale target, a £149.99 purchase provided approximately £150+ gross profit potential per unit before fees and other selling costs.
The main consideration was liquidity. As an expansion battery designed for a specific portable power station, the potential buyer pool was narrower than for mainstream electronics. Buyers purchasing multiple units therefore needed to be comfortable holding stock while waiting for the right customer.
Even with that risk, the margin provided plenty of room. More importantly, this deal demonstrated why vouchers should always be checked alongside the headline Amazon price. The £299.99 drop was good, but stacking the available voucher and bringing the final cost down to £149.99 was what turned it into a standout August flip.

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