Comparison · Batteries

EVE INR21700-50PL or Westinghouse WA640N-F1 6V 4Ah

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Capacity at high current: EVE INR21700-50PL (5000 mAh vs. 1536); Test current: EVE INR21700-50PL (40 A vs. 2); Resistance: EVE INR21700-50PL (3 mΩ vs. 20).

Model	EVE INR21700-50PL2026Read review →	Westinghouse WA640N-F1 6V 4Ah2023Read review →
Capacity at high current, mAh	5000	1536
Test current, A	40	2
Resistance, mΩ	3	20
Review conclusion	Recommended	With reservations

Only in one review: Energy 14.9 Wh (Westinghouse WA640N-F1 6V 4Ah); Weight 660 g (Westinghouse WA640N-F1 6V 4Ah).

EVE INR21700-50PL: broadly similar to Reliance but with lower impedance; the author preferred them for heavy loads.

Westinghouse WA640N-F1 6V 4Ah: The battery tested below its rated 4 Ah capacity; the author suspects this unit may be defective.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.