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WattBunker Power · Tested · Ranked
MARBERO · MARBERO M82 (88WH)
FRONT
BACK
PORTS
SCALE
IN USE
WattBunker Lab Score · 6.3 / 10
Capacity vs spec 69
Close to rated capacity in real-world testing
Recharge speed 66
Fast 0→80% on AC for its class
Inverter stability 63
Held nominal load without faults
Noise (1m) 59
Fan audible under high load
Build quality 61
Rigid chassis, ports recessed
In Stock
MARBERO

MARBERO M82 (88Wh)

The MARBERO M82 is a pocket-class 88 Wh unit that blurs the line between power bank and power station. 80W continuous AC (120W peak) from a 3.2-lb case the size of a DSLR, with 8 output ports, a 110V outlet, USB-C PD, a 12V car socket and a 3-level LED flashlight with SOS. It recharges 0–80% in about 2 hours and takes an optional 30W/60W solar panel. At 88 Wh it won't touch a full-size fridge, but for phones, a CPAP, a 12V cooler or a mini-fridge in short bursts it's one of Amazon's best-selling tiny stations — 8,600+ reviews at 4.3 stars.

4.3 (8,675) 4.3 out of 5 (8675 reviews)
88
Wh
80
W AC
3.2
lb
60
W solar
  • 88 Wh (24,000 mAh) lithium battery, 110V/80W pure outlet, 120W peak surge
  • 8 output ports: 2x AC, USB-A QC3.0, USB-C PD, 12V car socket, DC — up to 8 devices at once
  • 3.2 lb, 6.5 x 4.6 x 3.1 in — about the size of a DSLR body
  • Recharge 0–80% in ~2 hours via wall adapter; optional 30W/60W MARBERO solar panel
  • 3-level LED flashlight (up to 68h) with international SOS mode
  • BMS with short-circuit, overload, over-voltage, over-charge protection; UL drop-tested
  • 2-year warranty

The good and the bad

✓ Pros
  • Genuinely pocketable at 3.2 lb — lives in a glovebox or a day pack without thinking about it
  • 8 ports including USB-C PD and a 110V AC outlet is a lot of output for an 88 Wh unit
  • One of Amazon's most-reviewed tiny stations (8,600+ at 4.3★) — proven, not a no-name gamble
  • Built-in LED flashlight with SOS makes it a real emergency-kit item, not just a charger
✕ Cons
  • 80W continuous ceiling: no full-size fridge, microwave, coffee maker, or anything with a heating element
  • 88 Wh is tiny — a single laptop charge or ~2–3 hours of a 12V cooler, then it's empty
  • Lithium-ion (not LFP): expect fewer cycles and faster long-term capacity fade than LFP rivals
  • Listing specs are inconsistent (lists 230V/80W in one table, 110V elsewhere) — it's a US 110V unit
Who this is for

If this is you, you're in the right place

  • Phone/laptop emergency kit

    88 Wh tops up phones many times and gives a laptop one full charge. 3.2 lb means it lives in a bag or glovebox for outages and road trips.

  • 12V cooler or CPAP for a few hours

    A 30W CPAP (no humidifier) or a 12V camping fridge runs ~2–3 hours. Fine for a nap, a picnic, or bridging a short outage — not an overnight.

Who should skip this

If this is you, keep shopping

  • Anyone backing up a real fridge

    A full-size refrigerator pulls 100–400W and surges far higher; the M82's 80W ceiling trips instantly. Step up to the ALLWEI 300W or a 500Wh+ LFP unit.

  • Overnight or multi-device backup

    88 Wh empties in one laptop charge. For an overnight CPAP or running several things, you need 5–10x the capacity.

Real-world runtime

How long it lasts on real loads

Estimates apply 85% inverter efficiency to the rated capacity. Real-world numbers vary with temperature, battery age, and appliance duty cycle.

Load Watts Hours Note
Smartphone (full charges) 10W 7 h ~6–7 phone charges
Laptop 60W 1.2 h
12V camping fridge 30W 2.5 h
CPAP (no humidifier) 30W 2.5 h

Full specs

Battery

Chemistry Li-ion
Capacity 88Wh

Output

AC continuous 80W
AC surge 120W

Input & Recharge

Solar input 60W max

Physical

Weight 3.2lb

Fuel

Fuel type Electric
Verdict
6.3
OUT OF 10 · THINK TWICE

MARBERO MARBERO M82 (88Wh) — the verdict

The MARBERO M82 is a pocket-class 88 Wh unit that blurs the line between power bank and power station. 80W continuous AC (120W peak) from a 3.2-lb case the size of a DSLR, with 8 output ports, a 110V outlet, USB-C PD, a 12V car socket and a 3-level LED flashlight with SOS. It recharges 0–80% in about 2 hours and takes an optional 30W/60W solar panel. At 88 Wh it won't touch a full-size fridge, but for phones, a CPAP, a 12V cooler or a mini-fridge in short bursts it's one of Amazon's best-selling tiny stations — 8,600+ reviews at 4.3 stars.

Check on Amazon
Versus the competition

Where it wins and loses against the alternatives

ALLWEI
ALLWEI 300W (256Wh)
Price: $149 Wh: 256 Lab: 7.6/10

The natural step up: ALLWEI gives 3x the capacity (256Wh), 300W AC and LFP cells for ~$149. Pick the M82 only if pocket size and price are the whole point.

See review →
Jackery
Jackery Explorer 500 v2
Price: $359 Wh: 512 Lab: 8.4/10

Jackery 500 v2 is a different league — 512Wh LFP, 500W AC, 6,000 cycles at $359. The M82 is a charger you stash; the Jackery is a backup you rely on.

See review →

FAQ

How long does the MARBERO M82 (88Wh) run a typical refrigerator?
A modern A++ fridge averages ~150 W. With 88 Wh of usable battery, that's roughly 1 hours of continuous runtime before it depletes.
Is the MARBERO MARBERO M82 (88Wh) worth it versus competitors?
MARBERO competes directly with EcoFlow, Bluetti and Anker in this segment. The Lab Score of 6.3 suggests an acceptable unit at this price point. Cross-shop on /compare with your second pick.
Is it LFP or NMC?
The MARBERO M82 (88Wh) uses Li-ion cells.

Compared to alternatives