Anker 737 Power Bank (PowerCore 24K, A1289011) | Listed 140W PD 3.1 | 24,000mAh
In a Nutshell
- Anker 737 Power Bank (PowerCore 24K, A1289/A1289011): 24,000mAh / 86.4Wh cell rating (24,000mAh × 3.6V ÷ 1000 = 86.4Wh — §8 Wh identity). CairoVolt measured 74.2Wh usable USB-C output → usable-energy ratio 74.2 ÷ 86.4 = 85.9% (USB output vs rated cell Wh; NOT AC wall-plug efficiency).
- CairoVolt measured 136.8W on the fixed 28V/5A PD 3.1 EPR rail (FNB58: 27.4V × 4.99A = 136.726W ≈ 136.8W; 136.8 ÷ 140 = 97.7% of printed max). Real laptop-class output, but full 140W behaviour still depends on the laptop and a 140W-rated USB-C cable. Rail type is fixed EPR PDO — not USB PD AVS.
- Current safety check, 2026-07-23: Anker rc2506 / CPSC Sept 2025 power-bank recall set covers A1257 / A1263 / A1647 / A1652 / A1681 / A1689 — NOT A1289. Still verify the printed model (A1289011) and serial on the received unit against anker.com/rc2506 + anker.com/product-recalls.
- At 86.4Wh it sits below the common IATA 100Wh carry-on threshold, but Emirates and flydubai (since ~1 Oct 2025) prohibit using the power bank, charging devices from it, or charging the pack from aircraft sockets in-flight — carry-on only under labelled ≤100Wh rules. Check the carrier DG page before travel.
- Physical device anchors: Galaxy A15 3.36 full-charge equivalents; MacBook Air M2 top-up 0→91%. iPhone 15 ~5.15 and MacBook Pro 14" ~0.94 are calculated from 74.2Wh (§8), not re-benched on those devices. Single retail unit; June raw sheet gaps disclosed below.
How this fits Egyptian use — deep dive (airlines · heat · electricity)
For an Egyptian buyer, the Anker 737 answers: "I need one USB-C pack that can push real laptop-class watts (fixed 28V/5A EPR) and still fly under 100Wh." Our useful-energy measurement was 74.2Wh from an 86.4Wh rated pack (85.9% usable-energy ratio), so it can realistically top up a MacBook Air-class laptop or run a ~10W router for about 7 hours (74.2 ÷ ~10W ≈ 7.4h). RIGHT FOR: (1) FREELANCE / CLIENT DAY with one MacBook Air or Pro 14" that needs a high single-port top-up — 136.8W measured on EPR beats dual-100W packs when only ONE laptop matters. (2) CAIRO→DUBAI / DXB CONNECTION: 86.4Wh labelled pack is under the common cabin threshold; Emirates and flydubai allow carriage of one clearly labelled ≤100Wh power bank in cabin baggage but ban using it, charging devices from it, or charging the pack from aircraft sockets during the flight — seat-pocket carry only. (3) LOAD-SHEDDING HOME OFFICE: ~10W router + phone trickle from 74.2Wh usable can cover a typical 30–60 min Cairo cut with headroom. (4) SOMEONE COMPARING TO A1336: pick 737 for max single-laptop EPR wattage + higher usable Wh (74.2 vs 61.8); pick A1336 when TWO USB-C loads must run near 100W each. WRONG FOR: casual phone-only top-ups where a lighter 10K/20K pack is enough; buyers who need dual simultaneous 100W laptop feeds; anyone who assumes "140W printed" without a 140W-rated cable and a laptop that asks for EPR. HEAT: June bench ambient was 27.9°C; Cairo summer highs leave less thermal headroom — keep the pack ventilated, out of parked cars, and away from pillows or closed bags while charging. SAFETY: rechecked 2026-07-23 — A1289 is outside Anker rc2506 (A1257/A1263/A1647/A1652/A1681/A1689). Match A1289011 + serial on delivery.
Delivery to Cairo: Estimated 1–2 business days
