So how much money do I need to transfer to test opening a channel?
0.002 plus the fees to open a channel.
Then use "
reverse swap" to get some of the funds you don't need back to onchain, but that process comes with a fee of 0.0002+ BTC.
Or launch Electrum with
-testnet argument to use testnet's chain for testing purposes.
-snip-
0.002 is a lot of money, more than 1700 rubles. For example, my clients will transfer me let's say 60 rubles a month in total, this is 0.00005788 for a year this is 0.00069376 I thought for this to start saving using LN instead of Bitcoin cache as now
0.002BTC being "
good enough" is my personal opinion like I said above.
Other wallets however, will let you open a channel with lower amount IIRC maybe Electrum devs would reduce this in the future.
I can't recommend others though as I'm not using them.
BTW, long-term saving with that amount though LN is a no go, I suggest custodian wallets for amounts like 0.00069376 a year.
Reason is, you can't receive at all if you don't have inbound capacity, read this thread for more info:
Electrum Lightning Network walkthrough: Receiving a payment