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Question removable battery lithium


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I am in doubt if these two BM20 and BP-5L batteries are lithium or lithium polymer batteries or lithium ions?

the batteries BP-5L are 1800mah and the BM20 battery is 2000 I charged them using this  third photo charger for 75% after how many days do I need to recharge them again so they have long storage and durability?

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTXi58e_qNfzMCh8Kjr8ghv_fioU1COM08HvA&usqp=CAU
https://cf.shopee.com.br/file/247c2106d63885dc17be99b61824b8f1
https://www.dhresource.com/0x0/f2/a...rsal-cellphone-battery-lcd-charger-single.jpg
https://www.dhresource.com/0x0/f2/a...mobile-universal-battery-charger-usb-port.jpg

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