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If you have an Ikea near by, pick up their LSD NiMH (eneloop). The cells are made in Japan so most likely re-badged eneloop. $8-$10 per 4 battery = $2 – $2.5 per cell.
Ok, that is one of the cheapest chargers I have seen recently (not counting the USB one that just had 2 resistors to drop the current down to 3v) But for the batteries alone this is worth it, the reviews even say the batteries are pretty decent.
If you have an Ikea near by, pick up their LSD NiMH (eneloop). The cells are made in Japan so most likely re-badged eneloop. $8-$10 per 4 battery = $2 – $2.5 per cell.
https://www.ikea.com/us/en/cat/batteries-battery-chargers-41070/
These are $5 for 8 cells = ~ $0.6 per cell, so cheaper, but also of unknown quality and definitely not the advertised capacity. And the charger seems to be of questionable quality. Most useful review: https://www.amazon.com/product-reviews/B0D3HGYH8K/ref=acr_dp_hist_3?ie=UTF8&filterByStar=three_star&reviewerType=all_reviews#reviews-filter-bar