They do have newer TP4056 modules that have battery protection circuits built on them now…
As others have said in parallel the batteries autobalance, however if you have a weak/drainy cell in the paralleled battery it will slowly drain the rest of them down.
8800mAH batteries are massive Chinesium BS….best batteries in the world max brand spanking new is like 3200mAH…
That is the whole premis behind adafruits poerboost
5vdc in, charge a LiIon battery, then take that lower LiIon voltage and boost back up to a stable 5vdc for charging or whatever, to get higher voltages those buck/boost converters are ok…but terribly inefficient.
Almost exactly like this module (except this one has variable output volts)
but don’t expect more than an amp or two at higher output volts