I need help from a battery charging expert

LED Flashlights – General Info
1

A little off topic here but I figured there would be lots of battery experts on the site.

I have a handheld radio that I’m trying to purchase a replacement battery for. The radio is 10+ years old. It initially used a nickel metal hydride battery. I have found replacement batteries here:Replacement battery

They give three options for the replacement, with increasing milliamp hours. The first battery is a nickel metal hydride with 1800 mah, the other two are lithium ion batteries with higher capacity.

When my radio is manufactured, the charger was designed to charge the OEM nickel metal hydride battery. Will the same charger work with a lithium ion battery that has the same voltage? The chat person from the site that selling the battery says the charger will work with the lithium ion battery although I am skeptical.

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Depends if the Li-ion battery has a BMS, which I’m sure it does — the other factor is the shutoff voltage —- you don’t want more than 8.2- 8.4 volts —- Also the older chargers have a float voltage that Li-ion doesn’t need —- It should work fine, but I wouldn’t leave the new battery plugged in for extended periods of time — do they sell a new charger

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Thanks for the reply