Sunrise Medical Sterling Midi Owner's Manual page 26

Batteries and charging
Lead acid battery care plan
1 Only use an approved Sunrise
Medical charger compatible with
the vehicle to be charged.
2 Charge your batteries every
night regardless of the amount
of use your mobility device has
had during the day.
3 The charge cycle may be
interrupted if necessary, but it is
always better to leave the
battery charging cycle to finish.
4 If you leave your vehicle for an
extended period (more than 5
days) disconnect the main
battery lead.
5 Every two weeks check the level
of the acid/water mixture to
ensure it is correct. It may need
topping up with distilled water.
This should be carried out one
hour after charging to allow the
electrolyte to settle.
6 You may top up charge your
vehicle during the day if
required. However, ensure you
charge your vehicle fully
overnight.
7 Once every month charge your
batteries for 24 hours, this
ensures your battery cells are
fully charged.
8 Following all the seven points
above should result in a
healthier battery, greater range
for your vehicle and a longer life
for your batteries.
Issue 1
Maintenance free battery care plan
1 Only use an approved Sunrise
Medical charger compatible with
the vehicle to be charged.
2 Charge your batteries every
night, regardless of the amount
of use your mobility device has
had during the day. This applies
even if you don't use your
mobility device.
3 Do not interrupt the charging
cycle. Allow at least 8 - 10
hours continuous charging each
night. After heavy use or if you
have bigger batteries, you may
need to allow 10-14 hours
continuous charging.
4 Do not leave your batteries on
charge for more than 48 hours.
5 If you leave your vehicle for an
extended period (more than 5
days) disconnect the main
battery lead.
6 On return from an extended
period away from your vehicle
(more than 5 days), fully charge
your batteries for 24-48 hours
before use.
7 Do not top up the charge of your
batteries during the day. Wait
until the evening for a full
overnight charge. If you must
charge during the day, then we
recommend an 8 hour minimum
charge cycle.
8 As a general rule, maintenance
free batteries take longer to fully
charge than lead acid batteries.
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