Troubleshooting Tips & Facts
When Lithium batteries are stored for improper periods or storage, they can go into protection mode which results in either 0 volts, 1.4 volts, or a strangely low voltage. Most customers will believe their battery is dead and needs replacing, but the reality is that 98 percent of these batteries are refusing to be charged because the charger is unable to recognize the battery until its voltage surpasses 10 volts, only then can the charger activate the charging mode.
Here is a video that will help you understand your problem with examples of how you can reset your lithium battery to except a charge.
Following this, a Victron Blue Smart IP65 Charger can charge any battery.
Blue Smart IP65 Charger – Recovery of deeply-discharged Lithium ion batteries. Unlike other brands, the Blue Smart IP65 Charger will attempt to recharge a deeply-discharged battery by force-feeding it with a low current. Normal charging will then be resumed as soon as there is sufficient voltage across the battery terminals.