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Reviews (2)

Jan 14, 2021
3.0 Ah not 4.0 Ah, DON'T BUY. always go with the genuine instead!!!
10 of 11 found this helpful This is a 3.0Ah battery since the 18650 cells are 1500mah, not the advertised 4.0Ah. In order to be 4.0Ah the 18650 cells need to be 2000mah. I just bought this to see the quality of aftermarket batteries for the One+ system.
Opening up the battery I find a decent sized circuit board for showing the power left when the button is pushed and decently thick wires to conduct the power needed by your tools. 10x 18650 1500mah cells in a 2+2+2+2+2 battery configuration where "2" is two cells in parallel and the "+" is each "2" set in series. Each "2" cells in parallel means 3.6v @ 3.0Ah. Adding 5 x "2" cells in series means 18v @ 3.0Ah.
It's not a bad battery. In fact the quality looks good, but given the price of genuine Ryobi 4.0Ah batteries at Home Depot, 2 batteries for $80 ($40 a piece), there is no benefit to buying these off brand dubious power rating and manufactured batteries. Buy the genuine when they go on sale. The ryobi batteries are real Samsung or Sony cells.

Jul 16, 2019
Great qualiity. Well worth the upgrade to 3.7v lithium solar spotlights
Great light. 4 jumbo leds with focus cups, 3.7v lithium 18650 battery. High/Low/Off settings. High is bright. Low is just a tad less, almost imperceptible. Much better than lights that use AA nimh 300mah batteries. Will last 2-3 years, 5 tops. Neighboring landscape has these running for 2 years so far.