Is my BatteryPlus35 compatible with any Lithium LiFePO4 battery?

If your Battery Plus does not have the letters HA or II-HA or have the BMPRO green compatible stamp, then it is not compatible with a Lithium LiFePO4 battery.

Lithium LiFePO4 batteries may be sold/marketed as a simple drop-in for a lead-acid replacement, but they all require a charger with lithium profile.