wishiwereaskibum, the Opus BT-C3100's termination voltage can be set via a switch located inside, it allows selecting 4.35, 4.2 and 3.7 V. The latter figure is meant for LiFePO4 batteries but can also be used for what you aim to. Sources: Opus BT-C3100 v2.2 Review and Discussion @ Second Life Storage, Opus BT - C3100 "secret voltages" work pretty much as expected @ CPF. As someome says in the CPF thread, you can drill a hole in the case and move the switch with a toothpic. 
Fri, 01/24/2020 - 01:23