TrailManor Owner's Forum - View Single Post

**rickst29** · 12-09-2023, 12:34 PM

For the case of lead-acid batteries, the 'maintainer' should keep the battery at 100%, but must not ove4rcharge it. The voltage which corresponds to 100% changes according to temperature, and all the good ones have temp sensor lead.

If you do not fully disconnect the TM batteries from TM phantom loads, you will need more than 2A of current capability in float mode.
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Lithium batteries should not be kept near 100% during long-term storage. Instead, 40-60% of fully charged "State of Charge" is optimal.

Most maintainers which claim to be 'lithium compatible' will try to overcharge the batteries, but that can be overcome by setting lower voltage BMS limits (i.e., the maximum voltage during which the the charge circuit remains 'enabled') for storage use.

They cost a bit more, but the original "battery tender" devices have fewer complaints among amazon buyers.

12-09-2023, 12:34 PM	#4
rickst29 yes, they hunt lions. Join Date: Aug 2005 Location: Reno, NV Posts: 1,318	It depends on your battery type (lead acid or lithium) For the case of lead-acid batteries, the 'maintainer' should keep the battery at 100%, but must not ove4rcharge it. The voltage which corresponds to 100% changes according to temperature, and all the good ones have temp sensor lead. If you do not fully disconnect the TM batteries from TM phantom loads, you will need more than 2A of current capability in float mode. - - - Lithium batteries should not be kept near 100% during long-term storage. Instead, 40-60% of fully charged "State of Charge" is optimal. Most maintainers which claim to be 'lithium compatible' will try to overcharge the batteries, but that can be overcome by setting lower voltage BMS limits (i.e., the maximum voltage during which the the charge circuit remains 'enabled') for storage use. They cost a bit more, but the original "battery tender" devices have fewer complaints among amazon buyers. __________________ TM='06 2619 w/5K axle, 15" Maxxis "E" tires. Plumbing protector. 630 watts solar. 450AH LiFePO4 batteries, 3500 watt inverter. CR-1110 E-F/S fridge (compressor). TV = 2007 4runner sport, with a 36 volt "power boost".