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: Energy: CSB HRL-1234W-F2-FR (60.16 Wh vs. 11.95); Test current: CSB HRL-1234W-F2-FR (23.5 A vs. 4); Price: Epilot E4 (11.99 $ vs. 25).
Only in one review: Current 2 A (Epilot E4); Capacity 5097 mAh (CSB HRL-1234W-F2-FR); Efficiency 86 % (Epilot E4); Resistance 12 mΩ (CSB HRL-1234W-F2-FR); Weight 2700 g (CSB HRL-1234W-F2-FR).
CSB HRL-1234W-F2-FR: The battery delivered 5.9 Ah and 70 Wh at moderate discharge, but LiFePO4 delivered more energy.
Epilot E4: Works well, with useful pass-through charging and replaceable cells; a modification improves efficiency, but there is no fast charging.
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.
CSB HRL-1234W-F2-FR2020Read review →
Epilot E42018Read review →