Upgrading converter

Microlite Mike wrote:
Here's a clip from the WFCO site on their 8900 series (including the 8955) converters:

Automatic three-stage charging extends the life of your battery with output voltage modes of 13.2 VDC range “float” mode, 13.6 VDC range “absorption” mode, and a 14.4 VDC range “bulk” charge mode.The WF-8955 model provides 55 Amps and a clean, constant 13.6 VDC nominal output, for reliable operation of electronics and appliances. Automatic three-stage charging extends the life of your battery with output voltage modes of 13.2 VDC range “float” mode, 13.6 VDC range “absorption” mode, and a 14.4 VDC range “bulk” charge mode. Automatic three-stage charging extends the life of your battery with output voltage modes of 13.2 VDC range “float” mode, 13.6 VDC range “absorption” mode, and a 14.4 VDC range “bulk” charge mode.

The WFCO 8955 converter is NOT a single stage converter. While many claim it never goes into boost mode, my experience with that is that batteries are often mounted far from the converter and the voltage drop across the wire from battery to converter causes a false sense that the battery is fully charged. Nothing wrong with the converter that either relocation of batteries closer, or upgrading the battery to converter wire (to min #4 awg from standard #8 awg) won't solve.

That said, my old WFCO 8955 converter section now sits on a shelf in my shop and a Progressive Dynamic's deck mount converter is located within about a foot of my batteries (both LiFePo4).

The defect is that WFCO requires the voltage to sag below 13.2 volts during initial charge to trigger boost voltage. This is a nearly impossible task no matter how it is wired. In most cases it simply does not work.