Here are three stocks with buy rank and strong momentum characteristics for investors to consider today, April 18:Dragonfly Energy Holdings Corp. (DFLI) :  This lithium-ion battery company has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 50% over the last 60 days.Dragonfly Energy Holdings Corp's shares gained 39.9% over the last three months compared with the S&P 500’s advance of 3.4%. The company possesses a Momentum Score of A.Allison Transmission Hol ...