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The gear guide / Backup power

Choose backup power for the devices you need to keep running.

Compare Anker A1383 and Prime A110B by capacity, port limits and charging needs. More output watts do not automatically mean more phone charges.

Apocalypse Survivalist · Sources reviewed

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A model to consider / Manufacturer information

Anker A1383 — 20K, 87W

What is it?

A rechargeable USB power bank with a built-in USB-C cable. Anker lists 20,000mAh capacity and up to 87W combined output.

Who is it for?

A candidate if its connectors and supported charging profiles match your devices. It is the lower-cost option in this two-model comparison, not a claim that it is the cheapest available.

How is it used?

Charge the bank beforehand, then connect a compatible device using the appropriate cable and port. Check the power available in the combination you will actually use.

Main limitation

The 87W total is not the output of one USB-C connection. Stored capacity, conversion losses and the connected device determine how much use you get.

This is a reading of published specifications, not a hands-on test.

Read the manufacturer’s specifications ↗

Compare by purpose

Two power banks, different output needs.

These manufacturer-documented candidates are not a tested ranking. The higher-output model is worth considering only if its extra capability solves a requirement you have.

  1. 01 / DOCUMENTED SPECIFICATIONS

    Anker Power Bank — A1383 (20K, 87W)

    20,000mAh; built-in USB-C cable; up to 65W from a USB-C connection, with 87W maximum combined output under Anker's specified arrangement.

    Before you choose: Will its cable, charging profiles and shared output support your actual devices? This is not a promise of 65W from every connection at the same time.

    Manufacturer details ↗
  2. 02 / DOCUMENTED SPECIFICATIONS

    Anker Prime — A110B (20K, 220W)

    20,100mAh; up to 220W combined output and 140W from a compatible USB-C connection. Anker lists a weight of 510g.

    Before you choose: Do you need the higher output? Its 100W maximum USB-C input needs a suitable charger rated at least 100W and a 5A cable. The optional charging base is sold separately.

    Manufacturer details ↗

Write a short power budget.

List what you want to keep available and why: a phone for messages, a rechargeable light, or a laptop for a specific task. Rank those needs before choosing equipment. If the bank runs low, which device gets priority?

This is our suggested way to make the buying decision. We have not tested these two banks with your devices or measured how many charges either would provide.

Read capacity and output as different specifications.

The Anker capacity explainer distinguishes stored energy in watt-hours from a charge-capacity figure in mAh. Voltage matters, and energy is lost during conversion and charging. Dividing the bank’s advertised mAh by your phone’s mAh is not a reliable full-charge promise.

Read the maximum output separately. It tells you about the rate at which a compatible setup may receive power, not how long all your equipment will run. Do not treat a larger wattage number as an automatic improvement in outage endurance.

Match the model and the complete package.

Use the full model codes in the comparison above. Anker’s similar product names can refer to different hardware. The A110B here is not the older A1336; a price or specification for one cannot simply be transferred to the other.

Before comparing checkout totals, account for the charger and cables you already own. Paying for capability that none of your devices can use may add little to your plan. Conversely, the cheaper bank is not the right choice if it cannot supply a device you genuinely need.

Check each item in your emergency kit.

For a rechargeable flashlight, verify the light’s charging requirements. A headlamp may use replaceable batteries instead; do not assume that every item in a lighting guide charges directly from USB.

If you also use an emergency radio, decide which job belongs to each device. Keeping phone charging separate can avoid competing with the radio’s information role. This is a planning suggestion, not an endurance measurement.

Store it as equipment that needs maintenance.

Follow the exact unit’s charging and storage instructions. Anker’s safety guide calls for a cool, dry, ventilated charging location and cautions against hot parked cars, moisture and covered ventilation. A bag is a storage decision, not automatically a suitable charging location.

Before putting an older bank into service, check the current recall notices against its model and serial criteria. Make the bank and cable part of your packing check, including a regular readiness review. Buying the bank is only one part of keeping it useful.

A few useful answers

Questions before you choose.

Does 220W mean more stored energy than 87W?

No. Watts describe power, not stored energy. Compare watt-hours from the actual specification, then allow for conversion losses and the device's use. A higher output limit does not promise more full charges.

Will any USB-C cable give the maximum speed?

No. The device, charger, cable and selected port must support the required charging profile. Check the exact combination instead of relying on the connector shape.

Should I buy the higher-output model just for a phone?

Start with the phone's requirements and your backup plan. If the less expensive setup meets them, we have no tested basis for promising an emergency benefit from the extra output alone.

Evidence & limitations

Where the information comes from.

Sources reviewed . Product specifications and public guidance are identified below; they are not our own performance testing.

  1. Anker — A1383 product page ↗

    Exact model and package. Prices can change; no current Amazon price or stock claim is made here.

  2. Anker support — A1383 specifications ↗

    Capacity, built-in cable, input profiles and individual versus total output.

  3. Anker — Prime A110B specifications and FAQ ↗

    This is the 220W A110B, not the older 200W A1336. Maximum power figures depend on compatible equipment and conditions.

  4. Anker support — capacity and conversion ↗

    Explains watt-hours and conversion losses. Its illustrative calculations are not a runtime test of either candidate with your devices.

  5. Anker support — power-bank safety guide ↗

    Charging environment, storage and handling guidance. Follow the instructions for the exact unit.

  6. Anker — product recalls ↗

    Check current notices against the model and any serial-number criteria. A brand name alone does not identify an affected unit.