Do not rank two batteries by mAh alone when their reference voltages differ or are missing. Convert nominal charge to nominal energy only when the charge and voltage describe the same battery basis. Otherwise, use the documented Wh value for an energy comparison and leave the unsupported conversion unresolved.
The important step is matching the fields, not finding a voltage somewhere on the product. A USB output voltage is not automatically the reference voltage for a battery's advertised mAh.
Build a crosswalk before doing the multiplication
Copy the exact model and source wording into a worksheet. Identify whether each number describes the battery pack, an explicitly identified cell-equivalent basis, or an output rating. Do not combine fields merely because they appear in the same specification table.
For a documented nominal charge and nominal voltage on the same basis:
Nominal Wh = (mAh ÷ 1,000) × nominal V.
The result is nominal battery energy. It is not delivered energy at an output port, a count of full device charges, or a runtime measurement. Keep the manufacturer's stated Wh alongside the calculation instead of replacing it with more decimal places.
If the scope is missing, record “reference basis not provided.” Do not assume 3.7V, borrow a related model's voltage, or work backward from Wh to claim the manufacturer documented a voltage that it did not state.
Apply the boundary to A101 and E200
FlashFish's product data lists the following capacity fields. They illustrate why a larger-looking charge number is not enough to rank nominal energy.
| Exact model | Charge fields | Nominal voltage field | Documented Wh | Permissible comparison and unresolved basis |
|---|---|---|---|---|
| A101 | 26,400mAh; separate 6.6Ah field | 14.8V | 97.68Wh | 6.6Ah × 14.8V = 97.68Wh. Do not pair 26,400mAh with 14.8V without confirmation of its reference basis. |
| E200 | 13.6Ah; no separate mAh field supplied | 11.1V | 151Wh | 13.6Ah × 11.1V = 150.96Wh, consistent with 151Wh when rounded. This is nominal energy, not delivered output. |
A101's stated 26,400mAh field does not establish that it uses the 14.8V pack basis. Multiplying them would produce 390.72Wh, which conflicts with the stated 97.68Wh. Preserve that mismatch as a request for clarification; do not use that multiplication as the model's capacity.
The FlashFish A101 quick guide, linked from the manufacturer manual directory, uses the rounded 98Wh figure in its specification table. The product data's 97.68Wh remains the value used here. Neither document location nor numerical agreement establishes the electrical version of the unit you own.
On documented nominal Wh alone, E200's 151Wh exceeds A101's 97.68Wh. That limited ranking does not establish which model is the better equipment match. It supplies no runtime, usable-capacity, charging-speed, or output-compatibility result.
Three hypothetical labels show how rankings can change
These cases are invented labels for arithmetic only. They do not describe additional FlashFish products, measured capacity, or available offers.
Example 1: Same charge, different documented voltage
Battery A states 10,000mAh at 3.7V nominal; battery B states 10,000mAh at 7.4V nominal, each on its stated battery basis. The calculations give 37Wh and 74Wh. Equal mAh values therefore do not imply equal nominal energy.
Example 2: A smaller mAh number can represent more energy
Battery C states 20,000mAh at 3.7V, giving 74Wh. Battery D states 10,000mAh at 11.1V, giving 111Wh. Under those documented assumptions, D has the greater nominal energy even though C displays twice the mAh.
Example 3: Missing voltage stops the conversion
Battery E states 30,000mAh but gives no reference voltage or Wh. A separate 5V USB output label does not fill that gap. Leave E's nominal energy unknown and request the battery capacity basis; do not rank it against a documented 100Wh battery by the charge number alone.
Use this worksheet when a listing is ambiguous
| Field to capture | Entry rule | When to withhold a ranking |
|---|---|---|
| Exact model and label | Keep the source wording and regional version | Different or unidentified model |
| Charge and scope | Copy mAh or Ah with its battery basis | Basis missing or conflicting |
| Reference voltage | Use a documented nominal value for that charge basis | Only an output voltage is available |
| Stated nominal Wh | Preserve separately from your calculation | Unresolved conflict beyond stated rounding |
| Comparison result | Specify “nominal energy only” | No comparable energy evidence |
A useful manufacturer question includes the exact label and asks: “What reference voltage and battery basis apply to this mAh figure, and what nominal Wh should I use for this exact model?” This is more precise than asking which battery has the bigger number.
FAQ
Can I convert Ah to mAh?
Yes: multiply Ah by 1,000 while retaining the same reference basis. The unit conversion alone does not identify that basis or turn charge into energy.
Should I replace stated Wh with a calculated value?
Keep both. A small difference may reflect rounded fields, as in the E200 arithmetic above. An unresolved disagreement needs clarification rather than an invented correction.
Does nominal Wh tell me how many phone charges I get?
No. That needs separate evidence about the particular device and charging path. This worksheet makes no delivered-energy or charging-count prediction.
Use the completed crosswalk to narrow your A101 or E200 comparison. Resolve missing capacity bases first, then compare the exact model's documented outputs with your equipment requirements before choosing a configuration.
Next step: Compare FlashFish A101 specifications with your requirements.
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