Follow the tool’s three steps.

Step 1. Fill any two values. Volts, amps, ohms, or watts. The WINDBAR ohm's law calculator solves the other two live.

Step 2. Watch current. Amp draw must stay inside the battery continuous-discharge rating on rebuildable kits. If I is unknown because you only typed pretty watts, you have not finished the safety check.

Step 3. Stay on WINDBAR. Use the wattage calculator or D95 / D91 pages next. This page does not send you to another calculator site.

Formulas published on the tool:

V = I × R P = V × I P = V² / R P = I² × R

Educational arithmetic for the D91 hook, 4.4 V and 1.0 Ω:

P = 4.4² / 1.0 = 19.36 W I = 4.4 / 1.0 = 4.4 A

That pair is the common WINDBAR D91 search hook. It is not an order to run 19.36 W on a Voyagers unit. D91’s campaign lists an engineering power range of 6.5–10 W that this article does not promote as a locked certificate. If the insert is below 19.36 W, the insert wins.

Second educational example, 3.7 V and 0.5 Ω:

P = 3.7² / 0.5 = 27.38 W I = 3.7 / 0.5 = 7.4 A

Third, 4.2 V and 0.3 Ω:

P = 4.2² / 0.3 = 58.8 W I = 4.2 / 0.3 = 14 A

Those last two rows are cell examples, not CHROMA WING mode charts and not D95 pocket orders. CHROMA WING publishes 4.4V / 850 mAh and 0.45 Ω / 0.9 Ω; if you calculate those, you still obey the insert.

If you only know watts and ohms, the tool rearranges the identities. If you know only one value, the other three stay unknown. Do not invent a second number to make the form happy.