Seems sort of plausible that a sealed battery would NEVER need accessing.
Lead poisoning is not fun. An unsealed battery is "The Keys To The City" For...
EFFECTS OF Pb POISONING
Kidneys
Renal damage
Chronic lead nephropathy kidney disease
Death from nephritis kidney inflammation
Fanconi Syndrome
Gout
Renal hypertension
Increase in creatinine concentration
Nervous system
Encephalopathy brain disease
Cerebrovascular diseases, stroke, cerebral hemorrhage
Psychomotor impairment
Peripheral nervous system impairment eg wrist-drop
Peripheral Arterial Disease(53, 54)
Slowed nerve conduction velocity [slowed reaction time]
Tremor
Paresthesia, paralysis
Cardiovascular and circulation
Hypertension, elevated blood pressure
Increased systolic blood pressure in men
Cardio-toxic effects
Increased risk of cardiovascular disease
Coronary artery disease
Anaemia; falling haemoglobin levels
Platelet dysfunction
Increased erythrocyte [red blood cell] protoporphyrin
Increased ALA in urine
Increased protoporphyrin in urine
Increased risk of early death from heart attack or stroke
Intellectual and mental
Depression
Anxiety
Personality changes
Death from violence, suicide, accidents
Impaired concentration
Deficits in short term memory
Cognitive function deficit
Behaviour
Fatigue, muscular exhaustion
Sleep disturbance, insomnia
Irritability, agitation, restlessness, aggression
Sensory
Abnormalities in visuomotor coordination
Abnormalities in fine motor control
Deficits in visual acuity
Hearing loss
Somatosensory dysfunction [eg deficits in detection of vibration, changes in temperature]
Gastrointestinal / Digestive
Effects on gastrointestinal tract
Loss of appetite
Nausea
Constipation, diarrhoea
Abdominal pain, cramps
Weight loss, anorexia
Bone, muscle and joint
Bone marrow alterations
Myalgia [muscle pain]
Pain in buttocks and cramps in the legs as early stages of peripheral arterial diseases
Muscular weakness
Arthralgia [joint pain]
Bone marrow alterations
Bone lead mobilisation during menopause leads to decreased neurocognitive performance and increased systolic blood pressure in post-menopausal women
Wrist drop [the inability to hold the hand extended]
Long term effect: linked to osteoporosis which has symptoms of decline in bone density and increase risk in fractures, also inhibit normal fracture healing
Other
Headaches
Decreased longevity
Adrenal dysfunction
Teeth with blueblack-lines near gum base
Pallor
Cell damage (at blood lead level between 20 to 30 mg/dL for men and between 10 to 20 mg/dL for women)
Probable human carcinogen
Death
Increased risk of early death from cancer and all other causes (46)
