FAQs & Troubleshooting FAQ Search Results PJ-662 Not your product? Search by FAQ ID number Search Back to FAQs & Troubleshooting. 2 Results 1.faqp00001469_002 How to install the rechargeable Li-ion Battery (Optional) 2.faqp00001469_001 How to install the rechargeable Ni-MH Battery (Optional) FAQs & Troubleshooting