Comparison · Batteries

Westinghouse WA640N-F1 6V 4Ah or LG INR21700-M50T

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: Test current: LG INR21700-M50T (14.55 A vs. 2); Energy: LG INR21700-M50T (18.12 Wh vs. 14.9).

Model	Westinghouse WA640N-F1 6V 4Ah2023Read review →	LG INR21700-M50T2019Read review →
Test current, A	2	14.55
Energy, Wh	14.9	18.12
Review conclusion	With reservations	With reservations

Only in one review: Current 7.3 A (LG INR21700-M50T); Capacity 4969 mAh (LG INR21700-M50T); Capacity at high current 1536 mAh (Westinghouse WA640N-F1 6V 4Ah); Resistance 20 mΩ (Westinghouse WA640N-F1 6V 4Ah); Temperature rise 89 °C (LG INR21700-M50T); Weight 660 g (Westinghouse WA640N-F1 6V 4Ah).

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

LG INR21700-M50T: The cells show good consistency and perform better at low currents, but lag behind Samsung at high currents.

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.