Our WF-8900-AD-MBA Series is a quick, easy replacement part for all power centers that now includes an industry first, Patent Pending Auto-Detect technology. This new microprocessor-driven technology will recognize lithium ion and lead acid battery chemistries and automatically adjust the charging profile to match the battery type. No more buttons. No more switches. RV owners will have the peace of mind that their batteries will be accurately charged, eliminating over and undercharging risks