Do some of the critters not even attempt to switch into "boost" mode despite starting out at say, 12.2 volts? Or is it a threshold issue, where unusually low voltage is needed to trigger the boost mode.Or do they disobey the prime directive and not stay in "boost" mode for a full four hours?Does anyone out there have a WFCO that acts like the manual says it should act?This is going to help me to decide which shock electrodes and bamboo splinters to purchase when I'm in the USA next month.Thank You

Group 24... 30% SOC. 11.9V. WFCO 8955 never even budged into bulk mode. Sat at 13.6V the whole time recharging, for 4 hours. Really pissed me off. How hard is it to put back 50 amps lost? Very hard if the stupid unit won't go into bulk mode, in a reasonable amount of time off the grid. I was asking questions here shortly there after... SMkettner and a few others got me at least in the ball park. Then solar, then you and the Mega Watt Power supply.Industrial strength battery, and an industrial manual charger were my salvation to electrical independence off the grid.

At least yours might go into boost, my converter is 13.6 only and in hot weather it will cook your battery.

Get a Boondocker. It will start out in boost and drop out if the batteries are charged but will return and the amps flow at an amazing rate even in the normal mode. The new adjustable manual one is due out soon too if you want to bypass all the automatic stuff.

I moved my WFCO 8955 next to the batteries and increased the bank from 2 gp 27s to 4 GC2s. Now it goes into boost just as described in the manual. However, I rarely use the converter now as the solar has satisfied all my power needs since it was installed. Here's a link to the WFCO mod.

WFCO needs to have voltage sag below 13.2 volts during the initial charging AT THE CONVERTER TERMINALS.Your battery can be resting at 11 volts and WFCO voltage pops to 13.25 at the converter and no boost.The only easy way I know to get boost consistently is to hit the battery with 160 amp load using an inverter powering the microwave. 20 seconds is fine and away it goes. Still need fat wire connection. The smaller the WFCO the easier to get the voltage to sag below 13.2 volts.Put a voltmeter direct on the converter output before you power it up then monitor performance.

WFCO Please Describe The Operational Malfunctions

09FLSTC
Explorer
Sep 20, 2014
Get a Boondocker. It will start out in boost and drop out if the batteries are charged but will return and the amps flow at an amazing rate even in the normal mode. The new adjustable manual one is due out soon too if you want to bypass all the automatic stuff.
JiminDenver
Explorer II
Sep 20, 2014
At least yours might go into boost, my converter is 13.6 only and in hot weather it will cook your battery.
NinerBikes
Explorer
Sep 20, 2014
Group 24... 30% SOC. 11.9V. WFCO 8955 never even budged into bulk mode. Sat at 13.6V the whole time recharging, for 4 hours. Really pissed me off. How hard is it to put back 50 amps lost? Very hard if the stupid unit won't go into bulk mode, in a reasonable amount of time off the grid. I was asking questions here shortly there after... SMkettner and a few others got me at least in the ball park. Then solar, then you and the Mega Watt Power supply.

Industrial strength battery, and an industrial manual charger were my salvation to electrical independence off the grid.

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WFCO Please Describe The Operational Malfunctions

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