I've had one of those Lanterns,for about 2yrs now,It has the same Energizer 4-D batteries it came with,& Is still working Fine!I pulled the Batteries out a while back to clean them & the compartment,dabbed a little vaseline in areas to preserve the contacts,etc.The light isn't Real Bright but,It Beats candles by 100 to 1,for home use,Of Course!